NTWPA功率放大器说明书
5W 单声道高保真 D 类音频功率放大器 PA8157 产品手册说明书
PA8157是一款高保真、高效率、低EMI、免滤波、5W单声道D类音频功率放大器。
PA8157内部集成智能增益控制（AGC）功能，通过检测输出信号的大小智能调整系统的增益，避免了过载对于扬声器的损害，防止了音量过大时破音，提高了听觉体验。
PA8157采用了全差分免滤波PWM调制的系统架构，具有较好的抗干扰能力。
其内部集成的过温保护、欠压保护、过流保护、“咔哒”杂音抑制等功能模块，给PA8157提供了更强壮的鲁棒性，使其拥有了更好的适应能力。
PA8157采用了典型的SOP_8封装。
图1.典型应用图应用蓝牙音箱便携式音响设备玩具特点免滤波D类集成（自动增益控制）AGC功能输出功率5W@2Ω（THD+N=10%，5.3V）工作电压域：2.5V～5.5V低失真THD+N=0.04%@1W，5VPOP声抑制效率最高达88%高PSRR=75dB@217Hz过流、过温、欠压保护全差分/单端输入低噪声70μVrms（GAIN=10V/V）失调电压<20mV静态电流6mA@5V关断电流<0.1μASOP_8封装图2.PA8157封装图管脚定义极限参数注1注1：超出以上所列极限参数，可能造成器件的永久损坏。
以上给出的仅是极限范围，在这样的极限条件下工作，器件的技术指标不予保证。
长期在极限条件下工作，会影响器件可靠性。
R IN=10KΩ，C IN=100nF，T A=25℃，VDD=3.8V，除非有特殊说明图3.谐波失真+噪声 Vs. 输出功率图4.谐波失真+噪声 Vs. 频率图5. 输出功率 Vs. 输入幅度图6. 增益 Vs. 频率图7. 效率 Vs. 输出功率图8. AGC触发时间图9. AGC释放时间图10. PA8157测试原理图PA8157为脉冲输出方式，如图9所示，需要在两个输出各接一个低通滤波器将开关调制频率滤除，然后测量滤波器的差分输出即可得到模拟输出信号，VOP和VON被低通过滤后的差分输出波形和相减后的波形如下图所示。
NAD C 298 立体声功率放大器中文用户手册
®C 298立体声功率放大器用户手册• 阅读说明书- 在使用本产品前必须阅读所有的安全和操作说明书。
• 保留说明书- 安全和使用说明书应妥善保管以备后用。
• 注意警告- 本产品和使用说明书中标识的所有警告应予遵守。
• 遵照说明- 所有的操作和使用说明应予遵守。
• 清洁- 请在清洁本产品前将电源插头从墙上的电源插座上拔下。
请勿使用液体清洗剂或喷雾清洗剂。
请使用干布进行清洁。
• 附件- 为防止发生危险，请勿使用未经本产品生产商推荐的配件。
• 水源与潮湿- 请勿在水源附近使用本产品，如浴缸、洗脸盆、厨房水池、洗衣缸、潮湿的地下室、或靠近游泳池及其它类似的场所。
• 配件- 请勿将本产品放置在不稳定的推车、支架、三脚凳、托架或桌子上，因为如本产品跌落，有严重伤害儿童或成人并严重损坏本产品之虞。
请只使用由生产商推荐使用或跟本产品出售的推车、支架、三脚凳、托架或桌子。
将本产品安装在墙上或天花板时须遵照生产商之使用说明进行，并且须使用生产商推荐的安装配件。
• 推车- 用推车运载本产品的时候需要小心。
如疾速停下、过分用力和不平的地面都可能导致车载的本产品倾覆。
• 通风- 本产品机箱上的狭槽和开口是供通风之用，为确保本产品可靠操作以及防止过热而设置的。
千万不能堵塞或覆盖这些开口。
绝不能将本产品放在床、沙发、毯子等等其材料会堵塞这些开口的软物体上。
除非有足够的通风或遵照了生产商指示，不得将本产品放在书橱或机架等封闭的装置内。
• 电源- 本产品使用的电源必须是标签上所示的电源类型，并连接到带有保护接地连接的电源插座。
如您不清楚您家里使用什么电源，请咨询您的产品经销商或当地电力公司。
• 电源线保护- 电源线应该合理排布，使其不易被踩踏或被物品压着或夹着，特别要注意与插头接合部位、简便插座、以及在本产品连接处的电线。
• 电源插头- 在电源插头或电器耦合器被用作断开设备的情况下，断开设备应确保易于操作。
• 室外天线接地- 如果本产品连接外部天线或有线电视系统，为了保护本产品不受电压冲击和静电积集的损坏，请确保天线或有线电视系统已接地。
Tannoy iwSA 500 音频放大器说明书
2TANNOY iwSA 5002.0 WARNINGSBefore using your amplifier, be sure to carefully read the applicable items of these operating instructions and the safety suggestions.• Read these instructions.• Keep these instructions.• Heed all warnings.• Follow all instructions.• Do not use this apparatus near water.• Clean only with dry cloth.• Do not block any ventilation openings. Install in accordance with the manufacturers instructions.• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.• Do not defeat the safety purpose of the polarized or grounding - type plug. A polarized plug has two blades with one wider thanthe other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are providedfor your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.• Only use attachments/accessories specified by the manufacturer.• Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used use caution when moving the cart/ apparatus combination to avoid injury from tip-over.• Unplug this apparatus during lightning storms or when unused for long periods of time.• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way suchas Power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.• To completely disconnect this equipment from the mains, disconnect the power supply cord from the receptacle.• The mains plug of the power supply cord shall remain readily operable.• Do not remove top or bottom covers. Removal of the cover will expose hazardous voltages. There are no serviceable parts inside and removal may void the warranty.2.1 Important Safety Instructions2.2 WARNINGThe lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electrical shock to persons.2.3 CAUTIONThe exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.2.2 WARNINGTo reduce the risk of fire and electric shock, do not expose this apparatus to rain or moisture and objects filled with liquids, such as vases, should not be placed on the apparatus.3Thank you for selecting Tannoy developed by our dedicated team of design engineers, they are the choice of discriminating music and movie lovers the world over. Excellence is designed into our loudspeakers and electronics from the start. Careful selection of the very best components combined with strict quality control procedures during the production process ensures this level of excellence is maintained. We feel confident that you will enjoy your new Tannoy loudspeakers/electronics for many years to come.Please take time to read the rest of this owner’s guide before using your loudspeakers/electronics to gain maximum effect from their use. Once you have installed your new loudspeakers/electronics please complete and return the registration document – this does not limit your legal rights.CONTENTSINTRODUCTION3.0 APPROVALS2.0 WARNINGS2.1 Important Safety Instructions 2.2 WARNING 2.3 CAUTION7O W N E R ’S M A N U A LINTRODUCTIONMany in-wall and ceiling loudspeaker are designed simply to reproduce sound without any consideration for ultimate audio quality and vocal articulation. Not so with Tannoy installation products. Tannoy in-wall speaker systems are monitor quality speaker systems based on the company’s expertise in the manufacture of premium quality cabinet loudspeakers and studio monitors.The iwSA 500 amplifier was created specifically to maximize the inherent performance of your T annoy inwall subwoofer. By carefully matching the amplifier’s capabilities and performance criteria to the inwall subwoofer, Tannoy has enabled installers and end users to carefully tailor the performance to the job at hand.iwSA 50023446756.0 CONNECTIONS6.1 Input Connections 6.2 Connecting the Speaker 6.3 Cable Choice7.0 OPERATION7.1 Operation Precautions8.0 PROTECTION FEATURES8.1 Limiter Function9.0 MAINTENANCE 10.0 TROUBLESHOOTING 11.0 WARRANTY12.0 Technical Specifications iwSA 5008978882.4 User Responsibility 2.4.1 Speaker Damage 2.4.2 Radio Interference4.0 INTRODUCING THE iWSA 5004.1 Unpacking 4.2 Front Panel 4.3 Rear Panel5.0 INSTALLATION5.1 Mounting5.2 Operating Voltage43.0 APPROVALSThis equipment is tested and approved according to the Canadian Standards Association (CSA/C/US) and Federal Communications Commission (FCC).2.4 USER RESPONSIBILITY 2.4.1 Speaker DamageYour amplifier is very powerful and can be potentially dangerous to both, loudspeakers and humans alike. Many loudspeakers can be easily damaged or destroyed by overpowering, especially with the high power available. Always check the speakers’ continuous and peak power capabilities.Even is the amplifier’s front panel attenuators can be used to reduce the gain, it is still possible to reach full output power if the input signal level is high enough.TANNOY iwSA 5002.4.2 Radio InterferenceThis equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference from electrical equipment. This product uses radio frequency energy and if not used or installed in accordance with these operating instructions, may cause interference `in a particular installation.If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment on and off,the user is encouraged to try to correct the interference by one or more of the following measures:• Reorient or relocate the antenna.• Increase the separation between the equipment and receiver.• Connect the equipment into an outlet on a a circuit different from that to which the receiver is connected.• Consult the dealer or an experienced radio/TV technician for help.TANNOY iwSA 500iwSA 5007TANNOY iwSA 5006.3 Cable ChoiceAlways use the best quality of cable available within your budget. High quality audio signals passing from the amplifier to the loudspeaker are unusual in their demands on the cable. Wide dynamic range and frequency bandwidth information has to coexist with the ability to transmit peak currents of at least 10 Amps, without incurring any loss or signal impairment. This explains why the sound quality of the information reproduced by the loudspeakers is so dependant on the physical properties of the cables connecting them to the amplifier.Technically, we recommend two-core cable with cross section area not less than 1.5mm 2 (14 gauge) for cable runs of up to 3 metres. For longer lengths we would suggest that you use cable with a minimum cross sectional area of 2.5mm 2 (12 gauge).Keep the speaker cable leads as short as possible. Do not use shielded leads, such as microphone or guitar cable. Remember that the speaker cable robs the power of the amplifiers in two ways: by increasing the load impedance and by introducing resistive power losses.iwSA 5005.0 INSTALLATION The amplifier is two rack units high (2U) and will fit into a standard EIA 19” rack. Amplifiers should not be stacked directly on top of each other,we recommend a space at least 3” for the top and sides with 5” on the back . When shelf mounted the height of the supplied feet is adequate.5.1 MountingWARNING!A label just above the mains cable connector on the rear of the amplifier indicates the AC mains voltage for which the amplifier is wired. Connect the power cable only to the AC source referred to on the label. The warranty will not cover damage caused by connecting to the wrong type of AC mains.5.2 Operating Voltage6.0 CONNECTIONS From an unbalanced source the hot (+) center conductor connects to the center pin of the RCA connector. The (-) shield connects to the chassis of the RCA connector.From a balanced source the hot (+) conductor connects to the center pin of the RCA connector. The cold (-) and the shield connect to the chassis of the RCA connector.6.1 Input ConnectionsSpeaker connections are made via 4 gold plated binding posts. When connecting 1 subwoofer to the amplifier the (+) wire connects to the RED (+) binding post of output #1. The (-) wire connects to the BLACK (-) binding post of output #2.When connecting 2 Tannoy subwoofers one will connect to output #1. Negative (-) wire to BLACK binding post and positive (+) wire to RED binding post. The second will connect to output #2. Negative (-) wire to BLACK binding post and positive (+) wire to RED binding post.Never connect either output terminal to ground or to some other output or input terminal. Pay attention to speaker polarity; loudspeakers connected out of polarity degrade sound quality, and may be damaged as a consequence.6.2 Connecting The Speaker7.0 OPERATION• Make sure that the power switch is set to “off” before connecting any input or output, or operating the switch on the rear panel.• Make sure that the AC mains voltage is correct, and the same as the one printed on the rear panel of the amplifier.• Make sure that the switch on the rear panel for limiter function is in the correct position.7.1 Operation PrecautionsTANNOY iwSA 5008.0 PROTECTION FEATURES8.1 Limiter FunctionThe limiter function is included to prevent dangerous clipped signals reaching the speaker and damaging it. If an amplifier is severely overdriven, its output waveform is clipped (its peaks are squared off) - reducing the crest factor. In extreme cases the waveform can approach that of a square wave. An amplifier is normally capable of producing far more power under these conditions than its normal undistorted rated output power.The Tannoy iwSA 500 Amplifier has two modes of thermal protection and an auto shut down when an internal fault is detected.It is important to have the limiter function switch in the correct position for the number of subs connected, as it sets the amount of output power before limiting occurs.9.0 MAINTENANCEUnder normal use the amplifier should provide years of trouble-free service, with no maintenance required.10.0 TROUBLESHOOTINGThese are typical things to check if you think your amplifier is faulty:FAULT: No power indicator light• Check for proper voltage at receptacle.• Make sure power cord is properly seated in connector on the rear of the amplifier.• Check power switch on back of amplifier.• Check fuse located in holder/drawer below power input connector on back of amp.FAULT: No output• If the power indicator light is on, verify that there is a usable signal on the input.• Check position of level control knob on the front of the amplifier.• Check speaker cable connections on the output binding posts for bad connections.• Check speaker cables for possible short circuits.FAULT: The amplifier does not respond even after having checked the above items.In the unlikely event of a non-user rectifiable fault return the amplifier to your supplier, or an approved service center.Tannoy cannot be held responsible for damage or injury as a result of the top or bottom cover being removed.11.0 WARRANTYNo maintenance of Tannoy products is necessary.All of our products have been produced and tested with care and precision to give first-class service.All passive components are guaranteed for a period of five years from the date of purchase from an authorized Tannoy dealer subject to the absence of evidence of misuse, overload or accidental damage.All active and electronic components are guaranteed for a period of one year from the date of purchase from an authorized Tannoy dealer subject to the absence of, or evidence of, misuse, overload or accidental damage.If at any time during this warranty period the equipment proves to be defective for any reason other than accident, misuse, neglect, unauthorized modification or fair wear and tear, we will repair any such manufacturing defect or, at our option, replace it without charge for labour, parts or return carriage.If you suspect a problem with a Tannoy product then, in the first instance, discuss it with your Tannoy dealer. If you require further assistance then we ask that you deal directly with your local Tannoy distributor.For spares and service in NORTH AMERICA only:Contact: Customer Service Manager**********************Telephone: 519.745.1158DO NOT SHIP ANY PRODUCT TO TANNOY WITHOUT PREVIOUS AUTHORIZATION812.0 TECHNICAL SPECIFICATIONS AND DRAWINGSPERFORMANCEMaximum Output Power (1) (2)Minimum Nominal Load Impedance DistortionMinimum Frequency Bandwidth Input Impedance Current Draw at 4 ΩFRONT PANEL Level ControlCrossover Frequency Adjustment Phase ControlCrossover/Bypass Switch On/Auto Switch Power On Indicator REAR PANEL Input Connectors Link Connectors Output Connectors Mains Voltage Connector Mains Voltage Fuse Holder REAR PANEL SWITCHES Power Switch Limiter Function DIMENSIONSNet Dimensions (HxWxD)Shipping Dimensions (HxWxD)WEIGHTNet Weight (each) - kgs (lbs)Shipping Weight (each) - kgs (lbs)APPROVALS CSA C/US & FCCiwSA 500 SUBWOOFER AMPLIFIER500 Watts Continuous into 4 Ω250 Watts Continuous into 8 Ω4 Ω<1% @ Maximum Rated Output 20Hz - 500Hz (no filters or EQ)>20 kΩ5 AmpsAdjusts Input Signal Level 50Hz - 150Hz 0° - 180° Continuously Variable Engages or Disengages Low Pass Filter On Continuous / Sleep Mode Blue LED2 x RCA 2 x RCA4 x Gold Plated Binding Postings 120 Volt IEC - 2 Conductor T5AL, 250 VoltSwitchable 1 Sub or 2 Sub (See Page 9.)99 x 483 x 372 (37/8 x 19 x 145/8)208 x 538 x 445 (83/16 x 213/16 x 171/2)6.8 (15)8.6 (19)iwSA 500incl. Feet & Rack EarsNOTES(1) Thermal protection may occur at high continuous power.(2) Depending on configuration, output power may be lower due to limiting circuit.Tannoy United Kingdom T: +44 (0) 1236 420199F: +44 (0) 1236 428230E:********************Tannoy North AmericaT: (519) 745 1158F: (519) 745 2364E:**********************iwSA 500。
powersoft数字功放手册
4.1 Powersoft DIGAM 数字功放的主要特性---------------------------------------------------------6
4.1.1 音频特性----------------------------------------------------------------------------------------------6
两种编码方案的本质区别是 PWM 调制测量的是模拟信号幅度变化的绝对值。1bit 编码 调制测量的是模拟信号振幅变化的相对值，采用相加振幅的起始值获得幅振的绝对值变化。
1bit 数字功放的频响特性可达 2Hz~50KHz；失真更小；电源利用率可达 90%以上。但 它需更宽的频带和更复杂的编码电路，成本很高，尚未达到商品化的阶段。
图 1 脉冲调宽波形（PWM）
图 2 D 类数字功放原理图
D 类数字功放的电源利用率可达 80%以上。它的延时约为模拟功放的 1/6。因此声像定 位更精确，中高音的音质更清晰。但是在 PWM 编码过程中的信号过零失真（或称交越失真） 比模拟功放要大。为此，Powersoft 公司推出了解决此问题的一项新技术：自适应算法.脉冲 调宽技术，并把改进后的 D 类数字功放称为“T”类放大器，T 类数字功放的功率输出失真 大大地得到了改善。（见技术特性指标）
4.3.2 定电压传输中的功率匹配------------------------------------------------------------------------10
4.3.3 Powersoft 4 通道远距离功率传输系统（TU4）-------------------------------------------11
功放说明书翻译(完稿)
非常感谢您对MB系列产品的信赖，为了您更好地使用本产品请详细阅读说明书以便获得更好的使用效果Thank you for your trust of MB products, in order to make better use of your product, please read this Guide for better use of effects温馨提示：Tips:请保存原装纸箱和包装材料，以便以便将来装运和运输本设备，Save the original carton and packing materials for future shipping and transportation for the equipment,这些包装材料专门设计用于装运时保护设备。
These packaging materials specifically designed for shipping to protect equipment.警告：为防止火灾或触电危险，切勿将本设备放置雨淋或潮湿的环境中。
WARNING: To prevent fire or shock hazard, do not place the device雨淋或潮湿的环境中。
Rain or moisture.慎防触电，非专业人员，请勿开盖。
Guard against electric shock, non-professionals, do not open ends.注意：为避免触电，切勿移走壳盖（或背盖）。
Note: To avoid electric shock, do not remove the shell cover (or back cover.) 如有故障，应由合格的维修人员提供维修！If failure to provide qualified service personnel should repair!注意：因机内存有高压，非电子专业人员切勿拆卸机壳，如果内部电子零件被非正常接触，可能发生严重电击事故。
中国移动双模微功率放大器产品说明书讲解
GSM/TD-LTE双模微功率放大器产品说明书目录一、产品手册 (3)1.1产品概述 (3)1.2产品技术指标 (4)1.3产品外观图片 (6)1.4产品接口说明 (6)1.5产品安装方式 (6)1.6指示灯状态表 (6)1.7配件清单 (7)二、产品安装说明 (7)2.1安装前准备 (7)2.2设备连接 (8)三、产品使用说明 (8)3.1微功率放大模块产品对施主基站影响分析 (9)3.3微功率放大模块产品覆盖效果分析 (10)3.4地下停车场的应用 (11)一、产品手册介绍本产品的技术原理、设备功能、指标、安装及操作。
1.1 产品概述随着移动通讯网络的建设和发展日趋成熟，无线网络的深度优化工作逐渐成为各大运营商网络优化工作的重点。
提供更具针对性的网络深度覆盖解决方案，也成为各网优设备供应商开发新产品的最主要方向。
网络深度优化的复杂性在于覆盖场景的多样性，存在安装条件及覆盖面积各异、设备及安装维护成本压力大、客户投诉无法快速解决等诸多困难。
这些都要求网优设备供应商能提供区别于传统解决方案的针对性更强的新产品、新方案。
GSM/TD-LTE分布系统末端微功率放大模块产品是针对网络深度优化需求最新推出的产品，产品最主要的特点是：1、高智能：采用TD-LTE基带解码同步模块，同步精度高、工作稳定。
工作参数全自动调整，极其方便的安装、开通方式，即装即用，最大程度节约了安装及开通维护成本，而且适用于不同的覆盖场景。
2、高性能：高增益、高功率，适用于大部分深度优化覆盖场景，内置全数字处理的自激检测模块，避免安装及使用过程中的自激现象，避免对施主基站产生的干扰。
3、高稳定：全金属外壳，良好的散热条件，保证了设备能长期稳定的工。
微功率放大模块产品专用于小面积区域室内覆盖，与施主天线、重发天线及射频电缆组成信号延伸覆盖系统。
施主天线接收来自施主基站的下行信号经直放站下行链路发大后，通过重发天线发射出去。
覆盖区内的手机上行信号，被重发天线接收，经直放站上行链路放大后，通过施主天线发射出去。
功放机说明书
功放机说明书篇一：功放的说明书说明书一、面板布置：1、本功放由功放、播放器、电平指示器、扬声器四个模块组成。
其中功放有放大音频信号的功能，可把播放器音频、外接音频、话筒音频信号放大，通过调节旋钮可改变信号的大小。
播放器有读取内存卡里的音频文件并转化成音频信号（另有收音机功能）的功能。
电平指示模块是通过计算音频信号，获取音频里音调的高低信号，再通过led灯显示出来，具有装饰的功能。
扬声器是把音频信号转化成声音信号的作用。
2、正前方：电平指示 1314⑥⑦⑧⑨⑩11 12①②③④⑤左声道右声道①电源指示灯、②音频输入、③音量旋钮、④话筒音量旋钮、⑤话筒输入、⑥播放器电源开关、⑦上一曲/音量-、⑧播放/暂停、⑨下一曲/音量+、⑩播放模式、11数据线插孔、12 usb插孔、13播放器显示屏、14 sd卡插孔（注：11、12、14插孔都是输入插孔，不能输出）3、正后方：变压器变压器线散热器遥控器电源线耳机插孔扬声器插头注意：1、使用前检查电源线和变压器线是否完好，外层绝缘皮是否有破损，若有破损则需要用电胶布粘住，防止皮肤接触而触电。
2、通电时最好不要触碰变压器和变压线。
3、使用时禁止触碰散热器、变压器，防止因温度过高而烫伤。
4、当使用耳机听音频时，只需把耳机插入耳机插孔，但要注意，在使用耳机之前要控制好音量，防止音量过大而损坏耳机。
一般操作是先把音量调为最小，插入耳机后再慢慢增大。
二、使用步骤：1、打开电源：在打开电源前先把音乐音量，话筒音量④调为最小，并确定自带播放器开关⑥处于关闭状态。
然后把电源线接电，则电源指示灯会亮①。
2、接音频：音频有两种，一种是外接音频输入②，另外一种是自带播放器输入，其优先级是外接音频输入高于自带播放器音频输入。
（1）外接音频输入需用一根3.5mm音频线与外界播放器连接，另外一端必须接到功放的外接“音频输入”②插孔，注意播放器的音量③应适当,否则将会烧坏功放芯片和损坏喇叭。
（2）自带播放器输入：首先把优盘或sd卡插入相应位置11、12、13，然后把播放器开关打开⑥，启动自带播放器。
功率放大器
功率放大器科技名词定义中文名称：功率放大器英文名称：power amplifier定义：在给定失真率条件下，能产生最大功率输出以驱动某一负载(例如扬声器)的放大器。
应用学科：通信科技（一级学科）；通信原理与基本技术（二级学科）以上内容由全国科学技术名词审定委员会审定公布求助编辑百科名片功率放大器电路原理功率放大器，简称“功放”。
很多情况下主机的额定输出功率不能胜任带动整个音响系统的任务，这时就要在主机和播放设备之间加装功率放大器来补充所需的功率缺口，而功率放大器在整个音响系统中起到了“组织、协调”的枢纽作用，在某种程度上主宰着整个系统能否提供良好的音质输出。
目录功率放大器简介功率放大器种类组成功率放大器选购功率放大器原理性能指标（一）、输出功率（二）、频率响应（三）、失真（四）、动态范围（五）、信噪比（六）、输出阻抗和阻尼系数功率放大器术语详解阻抗匹配及防护措施1、功率放大器的阻抗匹配2、功率放大器的防护功率放大器的特点Hi-Fi功放与A V功放晶体管功放与电子管功放甲类功放与乙类功放纯后级功放与单声道功放Hi- Fi功放应有多大的输出功率电子管功放输出级的特点功率放大电流的特点功率放大器简介功率放大器种类组成功率放大器选购功率放大器原理性能指标（一）、输出功率（二）、频率响应（三）、失真（四）、动态范围（五）、信噪比（六）、输出阻抗和阻尼系数功率放大器术语详解阻抗匹配及防护措施1、功率放大器的阻抗匹配2、功率放大器的防护功率放大器的特点Hi-Fi功放与A V功放晶体管功放与电子管功放甲类功放与乙类功放纯后级功放与单声道功放Hi- Fi功放应有多大的输出功率电子管功放输出级的特点功率放大电流的特点展开英文名称：Power Amplifier编辑本段功率放大器简介利用三极管的电流控制作用或场效应管的电压控制作用将电源的功率转换为按照输入信号变化的电流。
因为声音是不同振幅和不同频率的波，即交流信号电流，三极管的集电极电流永远是基极电流的β倍，β是三极管的交流放大倍数，应用这一点，若将小信号注入基极，则集电极流过的电流会等于基极电流的β倍，然后将这个信号用隔直电容隔离出来，就得到了电流(或电压)是原先的β倍的大信号，这现象成为三极管的放大作用。
PWR-230单边带电台功率放大器试验器使用说明书
机载电子设备维修测试及故障分析方法编 写： 贺 军中信海直通用航空维修工程有限公司第一章：机载电子设备维修检测基本方法：第一节：检修程序：1、了解情况：1.1、维修人员接收到送检故障件后首先要通过送检故障单，阅读送检设备部件的历史资料等，了解故障现象和分析故障原因，作出初步故障判断。
1.2、按照送检设备件号查询和准备与该部件相符合的维修手册和相关技术资料，准备试验器和检测设备及连接电缆等附件。
1.3、如果送修件不是自己非常熟悉该设备电路原理和已经对该部件很有维修经验的时候，首先要静下心来认真消化该设备部件的维修手册，熟悉该部件整机电路工作原理和认真分析有可能与故障相关的电路。
1.4、按照维修校验规程连接好试验器、检测设备、故障部件。
1.5、按照校验规程检测故障部件，确认送检部件是否与送检故障相符。
2、检查压缩故障点：检查压缩，就是利用静态和动态实施检修的过程。
首先要进行对保险装置的检查，保险装置包括安装在部件上的速熔断保险丝、电源保安反向接入二极管、稳压二极管等进行检查，如有故障首先予以排除，保险装置检查合格后，方可通电检测。
常言道要“通过现象看本质”，检修故障也是如此，要能够顺利的压缩故障点，首先要认真、仔细、全面、准确地观察该部件故障现象，观察看电路板上有没有烧黑损坏的元器件，电路板上有没有异常的地方等，把握了故障现象在理论的指导下，作出正确的分析判断，按照一定的检修原则和方式，便可排除故障点。
3、修复检验：在检查压缩到故障点后，应立即修复，然后要加以检验。
检验的内容包括工艺焊接质量、机械性能和电气技术性能是否合格等。
检验方法应根据具体情况和校验规程条件确定，最简单的故障维修也要经过调整使用、试机，运用测试仪表和试验器进行技术指标检查，以确保主要技术性能指标达到维修手册的要求。
第二节：检修原则：为了正确而有效地实施检修，确保检修质量和安全，迅速修复，必须遵守一定的检修原则。
先思索后动手、先电源配件后机器、先外后内、先静后动、先简（易）后繁（难）、先通病后特殊等，这“六先六后”是每一个机载电子设备维修人员在检修中要遵守的原则。
专业功率放大器的使用说明书
使用说明书专业功率放大器User’s Manual目录2345768故障现象目录1注意事项格的AC 电源插座。
否则可能会导致火灾或触电。
电。
液体或细小金属物品落入本装置内可能会导致火灾或触电。
电源线，进而导致火灾或触电。
特别注意，切勿将重物压在被地毯覆盖的电源线上。
勿划伤、弯折、扭曲、拉伸或加热电源线。
否则可能会损伤电源线，进而导致火灾或触电。
勿打开本装置罩壳。
否则可能导致触电。
如果认为内部需要检修、维护保养或修理，请与代理经销商联系。
—暴露在飞溅的油沫、蒸汽之下，如靠近厨灶、增湿器等地方。
—不稳定的表面，如摇晃的桌面或斜面。
—暴露在过热环境下，如窗户紧闭的车内或受阳光直射的地方。
—暴露在高潮湿的环境下或灰尘积聚的地方。
灾或触电。
AC 电源插座拔出电源插头时请抓住插头部分。
切勿直接拽拉缆线。
否则可能会损伤电源线，进而导致火灾或触电。
装置在正面和背面都有通风孔，以避免内部温度升得过高。
请勿阻塞这些通风孔。
阻塞通风孔可能会导致火灾。
特别注意，切勿—将本装置侧放或倒放，—将本装置放在通风不良的地方，如书橱或壁橱（而不是安装在附带的专用支架上），用桌布覆盖本装置，或将它放在地毯以及床上。
请勿擅自改造本装置。
否则可能会导致火灾或触电。
如果出现闪电雷击，请尽快关闭本装置电源开关，并从电源插座拔出电源电缆的插头。
如果可能出现闪电，在接插状态请勿触碰电源电缆的插头，否则可能导致触电。
若电源线损坏（如切断或芯线裸露），请从代理经销商获取更换品。
用损伤的电源线继续使用本装置可能会导致火灾或触电。
若本装置从高处跌落或外壳损坏，请立即关闭电源开关，从A C 电源插座拔出电源插头，并与代理经销商联系。
若忽视本条注意事项继续使用，可能会导致火灾或触电。
当发现任何异常时，如冒烟、异味、噪音或有异物、液体进入装置内部，请立即关闭电源开关。
并将电源线插头从A C 电源插座中拔出。
请代理经销商代为修理。
这时若继续使用可能会导致火灾或触电。
NS4220用户手册V1.0
N S4220用户手册V1.0深圳市纳芯威科技有限公司2014年08月修改历史日期版本作者修改说明目录1功能说明 (5)2主要特性 (5)3应用领域 (5)4典型应用电路 (5)5极限参数 (6)6电气特性 (7)7芯片管脚描述 (8)7.1 NS4220管脚分配图 (8)7.2 NS4220引脚功能描述 (8)8NS4220典型参考特性 (9)9NS4220应用说明 (10)9.1 芯片基本结构描述 (10)9.2 低功耗关断控制端/SD (10)9.3 NS4220应用图示 (11)9.3.1 差分输入模式 (11)9.3.2 单端输入模式 (11)9.4 NS4220应用参数设置 (12)9.4.1 放大器增益设置 (12)9.4.2 输入电容Ci的选取 (12)9.4.3 电源去耦电容 (13)9.5 输出滤波器 (13)9.6 layout建议 (14)9.7 测试电路 (14)10芯片的封装 (15)图目录图1 NS4220典型应用电路 (6)图2 NS4220管脚分配图(top view) (8)图3 NS4220原理框图 (10)图4 /SD管脚设置 (10)图5 差分输入模式 (11)图6 单端输入模式 (11)图7 输入高通网络 (12)图8 输入高通滤波器曲线 (12)图9 输出端加磁珠应用图 (13)图10 转折频率为27kHz的LC输出滤波器 (13)图11 NS4220测试电路 (14)图12 eSOP-16封装尺寸图 (15)表目录表1 芯片最大物理极限值 (6)表2 NS4220电气特性 (7)表3 NS4220管脚描述 (8)1功能说明NS4220是一款无需滤波器，每声道可输出10W的D类立体声音频功率放大器。
NS4220 采用先进的技术，在全带宽范围内极大地降低了 EMI 干扰，最大限度地减少对其他部件的影响。
其输出无需滤波器的 PWM 调制结构减少了外部元件、PCB面积和系统成本。
MPA系列功率放大器用户手册说明书
Class-D Professional Amplifiers目录表重要安全事项和符号说明 (3)前言 (4)前板功能介绍 (5)后板功能介绍 (6)系统连接实例 (7)功放安装配电配线 (8)功放散热条件 (9)功放使用电平的调整 (10)技术指标 (11)故障排除 (12)产品物质拆分表 (13)1601 Jack Mckay Blvd, Ennis, Texas 75119, USA重要安全事项和符号说明1.阅读这些规定。
2.保存好这本使用手册。
3.注意所有警告。
4.遵守这些规定。
5.可使用软布及风枪进行清洁。
6.要注意不要形成热风循环。
按建议方法进行安装。
7.不要安装在热源附近，尽可能保证环境气温在35°C以下使用。
8.确保接地良好，不建议浮地使用。
9.保护电线防止被踩踏或挤压，尤其要注意插头、电源插座及其连接设备处。
10.必须按照以下开关次序来使用该产品：前级-功放（开）、功放（关）-前级。
12.若输入信号并接超过三台功放，建议使用信号分配器，以确保输入信号不至失真。
13. 不要将功放的某一个声道的输出接口接到另一个通道的输入接口。
不要将功放的输出并联或串联到另一台功放的输出接口来使用。
14.50%-100%,设计系统配置功放的时候，功放的功率应比音箱在相同阻抗的标称功率大应小心使用桥接模式。
11.通电前必须确保供电电压符合该设备的要求。
15.在维修功放的时候，禁止在桥接状态下将示波器的探头连接到功放的输出端，以免损坏功放和示波器。
16.建议：1)由于输出到音箱的电流较大，建议使用质量有保证的NL4型音箱螺旋插头。
2)多台功放使用时应计算好合适的配电，以确保达到合格的使用环境。
提醒用户本手册中有重要的信息。
小心触电，非拥有相关资质的人员请勿擅自开盖维修。
31601 Jack Mckay Blvd, Ennis, Texas 75119, USA Telephone: 800.876.3333 • Fax: 800.765.3435Class-D Professional Amplifiers前言欢迎拆包请在拆开包装后，确认功放的外观没有在运输途中遭到损坏。
DS18 NXL-N 音频放大器用户手册说明书
U S E R’S M A N U ALN X L-N2N X L-N1N X L-N4M O D E L S:• IRS (International Rectifier)Full Range Capable Class-D Amp Class• Ultra Compact Size for easy installation forPower Sports Applications• Variable Full Crossover Filter: LPF / FULL / HPF(NXL-4 & NXL-2)• Surface Mount Component Technology• Audio Precision Quality Control Verification• Stable & Reliable Four Layer PCB Trace Layout• Fully Aluminum Chassis Design• Power & Protection LED Light Status Indicator• Short Circuit, thermal and voltage protection• IPX67 Rating Waterproof for Power Soprts Applications NXL-N2NXL-N1NXL-N4Thank you for choosing DS18 NXL-N amps!To Take full advantage of the DS18 NXL-N amps you have just purchased, please read and follow the instructions in this manual. As with all of our products, professional installation by an authorized DS18 NXL-N amps dealer is highly recommended!Fully variable crossovers promote installation ease and save the cost of outboard crossovers. Additionally, they may be used in conjunction with outboard passive or active crossovers, depending on the complexity required by the system. The 12 dB per octave slope offers steep roll-off above or below the selected frequency.Against Overload, Short Circuit, Thermal, and Reverse Polarity. These protection features are designed to protect the amplifier from misuse, as well as from common causes of amplifier failure. The DS18 NXL-N waterproof amplifiers offer high quality audio reproduction for the audiophile and the everyday listener alike. All models feature fully variable crossovers with 12 dB per octave slopes, allowing you the ability to tailor the sound to best fit the speakers and your listening preferences.Ensures solid electrical connections that resist corrosion.Platinum Finish Connections Fully Variable Crossovers Protection CircuitryProfessional installation by an authorized DS18 NXL-N amps dealer is highly recommended! Otherwise, the performance of your new gear may not be satisfactory. In the event that you decide to do your own installation, please read and follow this manual very carefully. Failure to do so may compromise the integrity of this product, your vehicle, and possibly void the product warranty.Amplifiers are generally mounted in closed compartments of the vehicle or watercrafts. Select a location that will provide adequate ventilation for the amplifier. Avoid mounting the amplifier in exposed areas. Secure the amplifier with the screws provided.Before securing the amplifier, inspect the mounting location carefully to ensure that you do not drill into or damage any electrical, hydraulic, fluid or fuel lines.INPUT SECTIONBecause of the wide range of head unit output configurations all DS18 NXL-N amps have an adjustable input sensitivity of “Gain”. The gain is not a volume or a power limiting control like a throttle. It makes the amp more sensitive to input from the stereo; with the gain up, the amp will reach full output at a lower volume setting on the deck. At higher gain settings the amp also becomes more and more sensitive to noise from the vehicles’s electrical system. Try to run the gain at the lowest setting possible for your system.There is no correct gainsetting, becausespeakers requiredifferent powerdemands to reach thesame output, the gainsmost often need to beused to compensate forthese differences. If youtried to set all the gainsat half way you wouldprobably find thesystem didn’t sound very good. Using good judgment and listening carefully to each speaker is still the best way to tune a system.A crossover is a devicethat removes unwantedfrequencies from aspeaker or amplifier. Atweeter can easily bedestroyed by bass notesif they are not filteredout. Likewise asubwoofer will notsound natural if it isplaying midrangenotes. A crossoverremoves these sounds from the speaker. As you might guess, careful adjustmentin need to ensure that all the speakers are playing the right sounds and that you are left with no “holes” or low spots in the frequency response.DS18 NXL-N amplifiershave an adjustable bassboost. Begin youradjustments at lowvolume. If you do not hearany improvement thenwoofer does not need anybass boost.The Low Pass Filter (LPF)must be switched on forthe bass boost to activate.Use Bass Boost carefully. The demands on power output are tremendous. Try to minimize the use by changing woofer position or the enclosure size.This amplifier is a multichannel amplifierdesign, meaning it hasmore than one channelof speaker outputs. It isequipped with a largeblock style terminal forspeaker connection.Make this connectioncarefully and neatly.Strip your wire back andtwist the exposed leadsand insert them into the block terminal while being careful that there is no loose or frayed strands of wire and tighten the Allen head screw down on the terminal till the wire is tightly secured in place. If the wires ever come in contact with each other the amplifier will go into protection.1. Before you start, disconnect the negative cable from the car battery.Tape up the end so it is isolated from the battery.2. Run an appropriate gauge wire from the battery to the amplifier. Plan this partof the installation carefully. This cable will carry very high current, if it should short to the body and it is not properly fused it could catch fire.3. Connect the power wire to the battery using a fuse capable of the total currentload of all amplifiers connected. Don’t install the fuse yet. Wait until the end.Locate the fuse as close as possible to the battery. If the fuse is further than 18 inches (wire length) from the battery you should reevaluate the wire and fuse placement.4. Find the closest clear metal area to the amp for a ground. Sand, grind orscrape all paint and undercoating from the body and screw the groundsecurely in place.It is advisable to test the ground with an ohmmeter between the ground cable and the negative battery cable to ensure a good low resistance connection. Some allowys used in modern cars do not offer the best ground. If you believe this is the case - first consult with the vehicle manufacturer.5. Run the speaker wire to the speakers. It is advised that you leave some extrawire at this point. You can fix it later.6. If you haven’t done so already, mount the amp now.7. Connect the power and ground to the amplifier.ONLY AFTER THIS STEP - SHOULD YOU INSTALL THE FUSE AT THE BATTERY.8. Connect the remote wire from the head unit to the amplifier.Now is a good time to turn on the amp for the first time. Make sure it turns on properly and does not go into protection mode.9. Connect the speaker wires to the amp and speakers (make sure the amp isoff first). Make sure the polarity (+) and (-) is correct.10. Connect the RCA’s to the amp.11. Double check the amplifier controls at this time. Make sure everything is setcorrectly for your system.12. Now you’re ready to play it for the first time. It is best to leave the gain all theway down at first. Start with the head unit volume low and work your way up.13. Now you can tune the amp. Take your time and make only one adjustment ata time. It may take some time to get the system fully adjusted. During this timethe amp is drawing current from the battery. You should check the batteryvoltage from time to time and recharge it, if it gets low. That’s it. You’re done.Now have fun.1.56” (39.8 mm)N X L -N 2N X L -N 1N X L -N 4Should your amplifier require service please consult with the dealer from which it was purchased, orcontact DS18 Audio local Dealer.Do not attempt to return your amplifier directly to us without first calling for a Return Authorization Number.Units received without an accompanying ReturnAuthorization Number will be processed more slowly.Additionally, you must include a copy of yourpurchase receipt from an authorized dealer forconsideration of in-warranty service; otherwise repair charges will apply. Units received without a receipt will be held for 30 days, allowing us time to contact you and obtain a copy of the receipt. After 30 days, allunits will be returned without repair.O MD S18.C。
TOA 800D系列混音放大器操作手册说明书
(8) Latest firmware version information [Update to] Displays the latest version information of the firmware to be updated to when the Firmware Update button (7) is clicked. It cannot be changed.
• Control of the unit (p. 10) • Firmware update to the latest version (p. 11) • Log file download (p. 12) • Configuration file download/upload (p. 13) • Log file conversion (binary format to text format) (p. 15)
(3) Operation result display field The operation result by this software is displayed.
(4) Power status indication [Power] Indicates the power status of the connected unit. The power status switches between ON and OFF each time the Power ON/OFF button (5) is clicked. ON: Power ON state OFF: Power OFF state
(13) Import log file name field Displays the file name selected with the Input log file selection button (12) in full path name format.
Nsiway NNSS44116655 AB D类双模、5W单声道音频功放 用户手册说明书
N S4165用户手册V1.0深圳市纳芯威科技有限公司2014年8月修改历史日期版本作者修改说明目录1功能说明 (5)2主要特性 (5)3应用领域 (5)4典型应用电路 (5)5极限参数 (6)6电气特性 (6)7芯片管脚描述 (7)7.1 NS4165管脚分配图 (7)7.2 NS4165引脚功能描述 (7)8NS4165典型参考特性 (8)9NS4165应用说明 (10)9.1 芯片基本结构描述 (10)9.2 NS4165应用参数设置 (10)9.2.1 Powerdown使能脚SD (10)9.2.2 AB类/D类工作模式切换 (10)9.2.3 增益计算 (11)9.2.4 输入电容Ci的选择 (11)9.2.5 旁路电容Cb选择 (11)9.2.6 电源滤波电容选择 (11)9.3 效率 (11)9.4 保护电路 (11)9.5 layout建议 (11)9.6 测试电路 (12)10芯片的封装 (13)图目录图1 NS4165典型应用电路 (5)图2 NS4165管脚分配图(top view) (7)图3 NS4165原理框图 (10)图4 SD管脚工作状态设置 (10)图5 AB/D类工作模式设置 (10)图6 输出端加磁珠应用图 (11)图7 NS4165测试电路 (12)图8 eSOP-8封装尺寸图 (13)表目录表1 芯片最大物理极限值 (6)表2 NS4165电气特性 (6)表3 (7)NS4165管脚描述1功能说明NS4165是一款AB/D类工作模式可切换，超低EMI，无需滤波器，5W高效率的单声道音频功放。
AB/D类工作模式可通过一个控制管脚高低电平切换，以匹配不同的应用环境。
即使在D类工作模式下，NS4165 采用先进的技术，在全带宽范围内极大地降低了 EMI 干扰，最大限度地减少对其他部件的影响。
其输出无需滤波器的 PWM 调制结构及反馈电阻内置方式减少了外部元件、PCB面积和系统成本。
MPA系列专业功率放大器 新板说明书
目录注意事项 (1)产品声明 (2)包装附件 (2)简 介 (3)功能特点 (3)适用范围 (4)面板功能 (5)背板功能 (7)操作说明 (8)开启及关闭设备 (9)技术参数 (10)技术服务 (12)非常感谢您对亿欣电器的关注。
我们为能给您提供一台优质的产品而倍感欣慰。
现在恳请您能在使用本产品前先仔细阅读本手册。
为安全起见，在对本机作各种连接时，请不要抓住线缆进行拉扯，而应握住插头进行操作。
本机仅可在海拔2000米以下环境中使用！请勿对本机做任何线路改动或维修，否则将丧失产品保修权利。
请将本机放置在通风良好的环境中使用。
请不要在雷雨天气时使用本机，以免发生雷击损坏。
请不要使用汽油、香蕉水等化学溶剂擦拭本机，应使用柔软干燥的纺织物擦拭。
请确认您当地的电网电压是否符合本机供电电压要求。
本机使用电源 ：交流 220V-230V 50/60Hz请不要破伤电源线，以确保使用安全。
若长期不使用本机时，请拔出电源插头。
本机使用单极开关，开关断开时,本机并没有完全与电网断开、 开箱时请清随机附件是否齐备,并及时办理保修手续.本说明书及操作手册版权属西安原创电子科技有限公司所有，受《中华人民共和国著作权法》的保护。
未经西安原创电子科技有限公司书面明确许可，任何单位、个人不得利用手册中的内容开展生产、销售经营活动，也不得以任何目的、以任何形式或手段复制或传播本手册的任何部分。
并损害用户及西安原创电子科技有限公司的利益，否则西安原创电子科技有限公司将依法追究侵权者的法律责任。
对于不是由西安原创电子科技有限公司提供的产品附属设备或软件，西安原创电子科技有限公司不承担任何使用性或可靠性的责任。
本包装内包含以下附件，请开箱后认真清点；产品说明书 1份 保修卡 1份产品合格证 1份西安原创电子科技有限公司作为知名的音视频产品制造商,旗下：亿欣电器秉承专业、专心、诚信、创新的企业精神,努力开发更适合用户所需的优质产品，为国产音响及视频事业的发展贡献力量。
Pioneer DJ 04 高效无损音频放大器说明书
FeaturesApplicationsHigh efficiency Class D power modules. Power Factor Correction technologyHighly sensitive CMRR balanced inputs for improved noise rejection.XLR input and signal link connectors.SpeakON NL4 and binding post output connectors.Input sensitivity selector on the back panel (32dB / 1V / 0.775V).Routing mode selector on the back panel (stereo / bridge-parallel).Channel independent temperature, protection and clip warning indicators on the front panel.Channel independent power and -5dB / -10dB / -20dB / signal presence indicators on the front panel.HS-CMRR balanced inputsThe best signal quality at an amplifier output can only be achieved with the best signal quality at its input. With the DJ 04 series is not a problem to have long signal input cables along with power lines or other induced noise sources. The balanced signal inputs on the DJ 04 amplifiers implement a High Sensitivity CMRR (Common Mode Rejection Ratio) design in order to reject even the slightest added distortion on the signal, thus assuring the best possible audio signal at the input.TechnologyC 4 Channels lassD Power AmplifierDJ 04 seriesClass DSAE Audio Class D technology implements the most advanced electronics within the smallest form-factor amplifier modules. The Class D amplifiers by SAE Audio implement the most efficient sound amplification technology available today, providing an unmatched system portability and affordability with the best sonic performance.Power Factor CorrectorSAE Audio innovative Power Factor Correction (PFC) technology along with its renowned R-SMPS power supply allows to drawn current from the mains in a more efficient way translating to a higher output power with a lower power consumption. Additionally PFC improves audio quality; it generates lower harmonics of the mains frequency thus reducing the hum and induced distortion because of perturbed mains.The D J 04 s e ries are the best solution for those space-constricted installed sound reinforcement applications where sonic quality and system performance are required on a long-term full-power operating basis. Implementing SAE high-efficiency Class D power modules , the D J 04amplifiers provide an unprecedented acoustic fidelity on the high-power sound amplifiers range.SAE Audio next generation of audio power amplifiers are built into the most advanced ever 19” rack enclosure design. The Alu-Body chassis has been engineered to enhance the device protection, the thermal dissipation performance, and reduce the overall weight. Its curved lateral edges provide a wider surface in order to reduce the pressure applied in case of an impact, and the front and rear panels are protected within the same amplifier cover. Compared to traditional steel amplifier chassis the new full aluminum Alu-body design significantly reduces the amplifier weight, making it much more convenient to transport or install on mobile applications, and increases the thermal dissipation further improving the amplifier power efficiency.Aluminum UnibodyMobile / portable public address or monitoring amplification.DJ sound system.Small sized bar / café / lounge installation.Applications with signal processing requirements.DJ 4300DJ 4500DJ 4650No. 39 WenJiao Road East, HeShun, NanHai, FoShan, GD, China.TEL: +86 - 757 - 8512 - 9008FAX: +86 - 757 - 8568 - 8191SpecificationsModelDJ 04 rear panelOutput powerSAE reserves the right to make any changes to the product specifications without prior notice. Final specifications to be found in the user manual.*P ower tested under the condition of 20ms burst, 1KHz sine wave and 1% THD. Others power tested under the condition of 40ms burst,1KHz sine wave and 1% THD.300Wx4500Wx4650Wx436dB38.2dB 39.3dBOther specificationS/N rate (A)≥ 100dB20kΩ / 10kΩAir flow from front to rear8Ω Stereo 4Ω Stereo 2Ω Stereo Frequency response (@8Ω)THD+N Damping factorInput sensitivityInput impedance (bal/unbal)Voltage gain Cooling8Ω Bridge 4Ω BridgeDimension (mm)Dimension / Weight G.W.Product dimensions (mm)Packing dimensions (mm)≥500550Wx4*900Wx4*1100Wx4*850Wx4*1300Wx4*1550Wx4*0.775/1.0V/32dB1100Wx2*1800Wx2*2200Wx2*1700Wx2*2600Wx2*3100Wx2*7.7kg560x540x170483x438x898.05kg560x540x170483x438x898.35kg560x540x170483x438x8920Hz-20kHz(+0/-1dB)≤0.1%。
操作说明书PA放大器A-1706A-1712A-1724
19．辅助输入端子[AUX 3，4] -20dB,10kΩ,非平衡式。非立体声 RCA 接触 插孔。连接外围设备的信号输出。
此图示为 A-1724。
20．话筒/辅助输入端子
6．低音音质调节器 调节广播音质的低音。以中央位置为基准， 顺时针旋转，低音增强；反时针旋转，低音 衰减。
7．高音音质调节器 调节广播音质的高音。以中央位置为基准， 顺时针旋转，高音增强；反时针旋转，高音 衰减。
8．分区指示灯 指示灯亮表示用分区选择器开关选择的广播 分区（分区 1，2）。
9．分区选择器开关 选择所需广播区域。 按下 ZONE 1 和 2 开关，ZONE 1 和 2 输出终 端（14）分别输出信号。
PA 放大器
操作说明书
A-1706 A-1712 A-1724
此次承蒙您选购 TOA PA 放大器，谨致谢意。 为了使您有正确的使用方式，请务必详读此操作说明书，并长期使用我们的产品。
目录
安全须知 .................................................... 3 概要 ......................................................... 4 特点 ......................................................... 4 各部名称及功能
附件 ...................................................... 11 选购产品 .................................................. 11
Skyworks Solutions, Inc. SKY66292-11 高效4W功率放大器说明书
DATA SHEETSKY66292-11: 2300 to 2400 MHz High-Efficiency 4 W Power AmplifierApplications∙ FDD and TDD 2G/3G/4G LTE systems∙ 3GPP band 30 and 40 small cell base stations∙ Driver amplifier for micro-base and macro-base stations ∙ Active antenna array and massive MIMOFeatures∙ High efficiency: PAE = 36.5% @ +28 dBm∙ High linearity: +28 dBm with < -50 dBc linearized ACLR (20 MHz LTE, 8.5 dB PAR signal) ∙ High gain: 35.5 dB∙ Excellent input and output return loss: to 50 Ω system∙ Integrated active bias: performance compensated over temp ∙ Integrated enable On/Off function: PAEN = 1.7 to 2.5 V ∙ Single supply voltage: 5.0 V∙ Pin-to-pin compatible PA family supporting all 3GPP bands ∙ Compact (16-pin, 5 ⨯ 5 ⨯ 1.3 mm) package (MSL3, 260 ︒C per JEDEC J-STD-020)S kywork s G reen TM product s are compliant with all applicable legi s lation and are halogen-free.For additional information, refer to Skyworks Definition of Green TM , document number SQ04–0074.Figure 1. SKY66292-11 Block DiagramDescriptionThe SKY66292-11 is a high-efficiency fully input/output matched power amplifier (PA) with high gain and linearity. The compact 5 ⨯ 5 mm PA is designed for FDD and TDD 2G/3G/4G LTE small cell base stations operating from 2300 to 2400 MHz. The active biasing circuitry is integrated to compensate PA performance over temperature, voltage, and process variation.The SKY66292-11 is part of high efficiency, pin-to-pin compatible PA family supporting all 3GPP bands.A block diagram of the SKY66292-11 is shown in Figure 1. The device package and pinout are shown in Figure 2. Table 1 lists the pin-to-pin compatible parts in the PA family. Signal pin assignments and functional pin descriptions are described in Table 2.Table 1. Pin-to-Pin Compatible PA FamilyPart Number Frequency (MHz) 3GPP BandSKY66296-11 700 to 800 Bands 12, 13, 14, 17, 29, and 44 SKY66289-11 791 to 821 Band 20SKY66295-11 800 to 900 Bands 5, 18, 19, 26 and 27 SKY66298-11 900 to 990 Band 8 SKY66291-11 1805 to 1880 Bands 3 and 9SKY66299-11 1900 to 2000 Bands 2, 25, 33, 36, and 37 SKY66294-11 2000 to 2300 Bands 1, 4, 10, and 23 SKY66292-11 2300 to 2400 Bands 30, 40 SKY66297-11 2490 to 2690 Bands 7, 38, and 41SKY66293-21 3400 to 3800 CBRS, Bands 22, 42, 43, and 48 SKY66288-115150 to 5925Band 46DATA SHEET • SKY66292-11: 2300 TO 2400 MHz HIGH EFFICIENCY 4 W POWER AMPLIFIER123456789101112G ND RFIN G ND G NDV B I A SP A E NG N DG N DRFOUTG ND G ND V CC 3G N DV C C 2G N DV C C 1203282C -00216151413Figure 2. SKY66292-11 Pinout(Top View)Table 2. SKY66292-11 Signal Descriptions 1PinNameDescriptionPinNameDescription1 GND Ground 9 R F OUT R F output port2RFINRF input port10GNDGround3 GND Ground 11 GND Ground 4GNDGround12VCC3Stage 3 collector voltage 5 VBIAS Bias voltage 13 GND Ground 6 PAENPA enable14 VCC2Stage 2 collector voltage7 GND Ground 15 GND Ground 8GNDGround16VCC1Stage 1 collector voltage1 The center ground pad must have a low inductance and low thermal resistance connection to the application’s printed circuit board ground plane.Technical DescriptionThe matching circuits are contained within the device. An on-chipactive bias circuit is included within the device for both input and output stages, which provides excellent gain tracking over temperature and voltage variations.The SKY66292-11 is internally matched for maximum output power and efficiency. The input and output stages areindependently supplied using the VCC1, VCC2, and VCC3 supply lines (pins 16, 14, and 12, respectively). The DC control voltage that sets the bias is supplied by the VCBIAS signal (pin 5).Electrical and Mechanical SpecificationsThe absolute maximum ratings of the SKY66292-11 are provided in Table 3. Recommended operating conditions are specified in Table 4 and electrical specifications are provided in Table 5. Typical performance characteristics are shown in Figures 3 through 16.DATA SHEET • SKY66292-11: 2300 TO 2400 MHz HIGH EFFICIENCY 4 W POWER AMPLIFIERTable 3. SKY66292-11 Absolute Maximum Ratings1Parameter Symbol Minimum Maximum Units RF input power (CW, 50 Ω load) P IN8dBm Supply voltage (VCC1, VCC2, VCC3, VBIAS) V CC 5.5V PA enable V EN 3V Operating temperature T C-40 +100 ︒CStorage temperature T ST-55 +125 ︒CJunction temperature T J+150︒C Power dissipation @ +28 dBm output power P D 1.4W Device thermal resistance @ +28 dBm output power θJC14︒C/W Electrostatic discharge:Charged Device Model (CDM) Human Body Model (HBM) 5001000VV1 Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters setat or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.ESD HANDLING: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device.This device must be protected at all times from ESD when handling or transporting. Static charges may easily producepotentials of several kilovolts on the human body or equipment, which can discharge without detection.Industry-standard ESD handling precautions should be used at all times.Table 4. SKY66292-11 Recommended Operating ConditionsParameter Symbol Minimum Typical Maximum Units Supply voltage (VCC1, VCC2, VCC3, VBIAS) V CC1,V CC2,V CC3,V BIAS 4.75 5 5.25 VPA enable: ON O F F PAEN1.72.02.50.5VVPA enable current I ENABLE 112μA Operating frequency f 2300 2400 MHz Operating temperature T C-40 +25 +85 ︒CRF turn-on/turn-off time1 1.8 μs1 RF turn-on time is measured from the time the PA enable reaches 50% of PA enable "on" level to the time at which the RF output power achieves 90% of the average steady-state “on” level. RF turn-off time is measured from the time the PA enable reaches 50% of PA enable "on" level to the time at which the RF output power decreases to 10% of the average steady-state “on” level.DATA SHEET • SKY66292-11: 2300 TO 2400 MHz HIGH EFFICIENCY 4 W POWER AMPLIFIERTable 5. SKY66292-11 Electrical Specifications1(V CC1 =V CC2 =V CC3 =V BIAS = 5 V, PAEN = 2.0 V, f = 2350 MHz, T C = +25 ︒C, Input/Output Load = 50 Ω, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical Max Units requency f 23002400MHz Small signal gain |S21| P IN = -30 dBm 34 35.5 dBGain @ +28 dBm |S21|@ +28 dBm P OUT = +28 dBm 34 35.5 dBInput return loss |S11| P IN = -20 dBm 11 18 dBOutput return loss |S22| P IN = -20 dBm 10 15 dBReverse isolation2 |S12| P IN = -30 dBm 55 dBACLR @ +28 dBm ACLR P OUT = +28 dBm (20 MHz LTE, 8.5 dB PAR signal) -34 -30.5 dBcSaturated output power P SAT CW,P IN = +8 dBm +35.2 +36.5 dBmOutput power at 3dB gain compression P3dB CW, reference to small signal gain+35.2 +36.1 dBm2nd harmonic 2f O CW,P OUT = +28 dBm -48 -40 dBc 3rd harmonic 3f O CW,P OUT = +28 dBm -52 -45 dBc Power-added efficiency PAE CW, P OUT = +28 dBm 32 36.5 % Quiescent current I CCQ No RF signal 70 100 mA1 Performance is guaranteed only under the conditions listed in this table.2 Not tested in production. Verified by characterization.DATA SHEET • SKY66292-11: 2300 TO 2400 MHz HIGH EFFICIENCY 4 W POWER AMPLIFIERTypical Performance Characteristics(V CC 1 = V CC 2 = V CC 3 = V BIAS = 5 V, PAEN = 2.0 V, f = 2350 MHz, T C = +25 ︒C, Input/Output Load = 50 Ω, Unless Otherwise Noted)1012141618202224262830P OUT (dBm)Figure 3. PAE vs P OUT Across Frequency P OUT (dBm)2627282930A C L R (dB c )Figure 5. ACLR vs. Pout Across FrequencyP OUT (dBm)101214161820222426283032343638Figure 7. Gain vs P OUT Across Frequency P A E (%)P OUT (dBm)1012141618202224262830Figure 4. PAE vs P OUT Across TemperatureP OUT (dBm)A C L R (dB c )-41-39-37-35-33-31-292627282930Figure 6. ACLR vs P OUT Across TemperatureP OUT (dBm)101214161820222426283032343638Figure 8. Gain vs P OUT Across TemperatureDATA SHEET • SKY66292-11: 2300 TO 2400 MHz HIGH EFFICIENCY 4 W POWER AMPLIFIERP OUT (dBm)101214161820222426283032343638I O P (m A)Figure 9. Operating Current vs P OUT Across Frequency -55-53-51-49-47-45230023252350237524002n d H a r m o n i c s (d B c )Frequency (MHz)Figure 11. 2nd Harmonic vs Frequency Across Temperature@ P OUT = +28 dBm (CW) Frequency (MHz)32.533.033.534.034.535.035.536.036.537.037.5230023202340236023802400S 21 (d B )Figure 13. Small Signal Gain vs Frequency Across Temperature(P IN = −30 dBm) P OUT (dBm)I O P (m A )4710131619222528313437Figure 10. Operating Current vs P OUT Across Temperature23002325235023752400Frequency (MHz)-58-56-54-52-50-483r d H a r m o n i c s (d B c )Figure 12. 3rd Harmonic vs Frequency Across Temperature@ P OUT = +28 dBm(CW)203282C -014Frequency (MHz)S 21 (d B )-20.0-10.00.010.020.030.040.01000150020002500300035004000Figure 14. Wide Band Small Signal Gain vs Frequency(P IN = –30 dBm)DATA SHEET • SKY66292-11: 2300 TO 2400 MHz HIGH EFFICIENCY 4 W POWER AMPLIFIERFrequency (MHz)-30.00-25.00-20.00-15.00-10.00S 11 (d B )230023202340236023802400Figure 15. Input Return Loss vs Frequency Across Temperature(Small Signal, P IN = −20 dBm) Frequency (MHz)-18.00-17.00-16.00-15.00-14.00-13.00-12.00-11.00-10.00230023202340236023802400S 22 (d B )Figure 16. Output Return Loss vs Frequency Across Temperature(Small Signal, P IN = −20 dBm)Evaluation Board DescriptionThe SKY66292-11 Evaluation Board is used to test the performance of the SKY66292-11 PA. An Evaluation Board schematic is provided in Figure 17. Table 6 provides the Bill of Materials (BOM) list for Evaluation Board components. An assembly drawing for the Evaluation Board is shown in Figure 18. Layer details are shown in Figure 19. Layer details physical characteristics are noted in Figure 20. Circuit Design ConsiderationsThe following design considerations are general in nature and must be followed regardless of final use or configuration: ∙ Paths to ground should be made as short as possible.∙ The ground pad of the SKY66292-11 has special electrical and thermal grounding requirements. This pad is the main thermal conduit for heat dissipation. Because the circuit board acts as the heat sink, it must shunt as much heat as possible from the device.Therefore, design the connection to the ground pad to dissipate the maximum wattage produced by the circuit board. Multiple vias to the grounding layer are required.NOTE: A poor connection between the ground pad and ground increases junction temperature (T J ), which reduces the life of the device.Evaluation Board Test ProcedureTurn-On Sequence1. Connect 50 Ω test equipment or load to the input andoutput RF ports of the Evaluation Board. 2. Connect the DC ground.3. Connect all VCCs and VBIAS lines to a +5 V supply.Connect PAEN to a 2.0 V supply.4. Without applying RF, turn on the 5 V supply, then turn onthe 2 V PAEN.5. Apply RF signal data at –30 dBm and observe that the gainof the device complies with the values in Table 5. Begin measurements.Turn-Off Sequence1. Turn off the RF input to the device.2. Turn off PAEN (set to 0 V).3. Turn off all VCCs and VBIAS.NOTE: It is important to adjust the VCC voltage sources so that +5 V is measured at the board. High collector currents drop the collector voltage significantly if long leads are used. Adjust the bias voltage to compensate.DATA SHEET • SKY66292-11: 2300 TO 2400 MHz HIGH EFFICIENCY 4 W POWER AMPLIFIER203282C -0178 HeaderV CC 3Figure 17. SKY66292-11 Evaluation Board SchematicDATA SHEET • SKY66292-11: 2300 TO 2400 MHz HIGH EFFICIENCY 4 W POWER AMPLIFIERTable. 6. SKY66292-11 Evaluation Board Bill of Materials (BOM)Component Description SizeΩ, 0.063 W 0402C1 Resistor,C3 Ceramic capacitor, 1 μF, 16 V, ±10% 0402 C4, C7, C9, C11 Ceramic capacitor, 3300 pF, ±10%, 50 V 0402 C6 Ceramic capacitor, 100 pF 0402 C8, C10, C12 Ceramic capacitor, 10 μF, 16 V, ±10% 1206 L1 DNI 0402Board – TW21-D690-011 Evaluation203282C-018Notes:1. Evaluation Board Gerber files are available on request.2. The C1 component shown in this assembly is a 0 Ω resistor.3. The L1 component shown in this assembly is DNI.Figure 18. Evaluation Board Assembly DrawingDATA SHEET • SKY66292-11: 2300 TO 2400 MHz HIGH EFFICIENCY 4 W POWER AMPLIFIER203282C -019Layer 1Layer 2Layer 3Layer 4Figure 19. Evaluation Board Layer DetailsC ro ss S ection NameThickne ss (mm)Material sTMa s k L1Dielectric L2Dielectric L3Dielectric L4BMa s k0.0100.0350.2500.0350.3500.0350.2500.0350.010S older Re s i s t C u, 1 oz.R04350C u, 1 oz.FR4C u, 1 oz.FR4C u, 1 oz.S older Re s i s t50 OhmW = 0.500 mm203282C -020Figure 20. Layer Detail Physical CharacteristicsApplication Circuit NotesCenter Ground. It is extremely important to sufficiently ground the bottom ground pad of the device for both thermal and stability reasons. Multiple small vias are acceptable and work well under the device if solder migration is an issue.GND (pins 1, 3, 4, 7, 8, 10, 11, 13, and 15). Attach all ground pins to the RF ground plane with the largest diameter and lowest inductance via that the layout allows. Multiple small vias are acceptable and will work well under the device if solder migration is an issue.VBIAS (pin 5). The bias supply voltage for each stage, nominally set to +5 V.RFOUT (pin 9). Amplifier RF output pin (Z O = 50 Ω). The module includes an onboard internal DC blocking capacitor. All impedance matching is provided internal to the module.VCC1, VCC2, and VCC3 (pin 16, 14, and 12, respectively). Supply voltage for each stage collector bias is nominally set to 5 V. Bypass and decoupling capacitors C6 through C12 should be placed in the approximate location shown on the evaluation board assembly drawing, although exact placement is not critical. RFIN (pin 2). Amplifier RF input pin (Z O = 50 Ω). The module includes an onboard internal DC blocking capacitor. All impedance matching is provided internal to the module. Package DimensionsTypical part marking for the SKY66292-11 is shown in Figure 21. The PCB layout footprint for the SKY66292-11 is shown in Figure 22. Package dimensions are shown in Figure 23, and tape and reel dimensions are provided in Figure 24.Package and Handling InformationSince the device package is sensitive to moisture absorption, it is baked and vacuum packed before shipping. Instructions on the shipping container label regarding exposure to moisture after the container seal is broken must be followed. Otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly.The SKY66292-11 is rated to Moisture Sensitivity Level 3 (MSL3) at 250 ︒C. It can be used for lead or lead-free soldering. For additional information, refer to Skyworks Application Note, PCB Design and SMT Assembly/Rework Guidelines for MCM-L Packages, document number 101752.Care must be taken when attaching this product, whether it is done manually or in a production solder reflow environment. Production quantities of this product are shipped in a standard tape and reel format.IndicatorS kywork sPart NumberLot C odeC ode:C alendar YearCC = C ountry C ode Figure 21. Typical Part Marking for the SKY66292-11S tencil Aperture Top ViewS tencil aperture s ize for center ground pad 80% to 100% (by area) of the s older ma s0.6Thermal via array on 0.6Metallization Top ViewS older Ma s k OpeningTop ViewOpening s ize of 6of expo s Notes:1. Thermal vias should be resin filled and capped in accordance with IPC–4761 type VII vias.2. Recommended Cu thickness is 30 to 35 μm.203282C -022Figure 22. SKY66292-11 PCB Layout FootprintPin 1 IndicatorTop Views k Edgeolder Ma s k Edge sPadS cale: 2X8X thi s rotationDetail APadS cale: 2X4X thi s rotation4X rotated 180°4X rotated 90° C W4X rotated 90° CC WS ide ViewDetail CPadS cale: 2X1X thi s rotationS older Ma sCBottom View203282C-023 Notes:1. Dimensions are in millimeters (unless otherwise specified).2. Dimensions and tolerances are in accordance with ASME Y14.5M–1994.Figure 23. SKY66292-11 Package DimensionsØ1.Notes:1. C arrier tapes must meet all requirements of Skyworks GP01-D232 procurement spec for tape and reel shipping.2. C arrier tape shall be black conductive polycarbonate.3. C over tape shall be transparent conductive material.4. E SD-surface resistivity shall be ≤ 1 × 1010 Ω/square per EJA, JEDEC TNR specification.5. A ll measurements are in millimeters.203282C-024Figure 24. SKY66292-11 Tape and Reel DimensionsOrdering InformationModel Name Manufacturing Part Number Evaluation Board Part Number SKY66292-11: 2300 to 2400 MHz High Efficiency 4 W Power Amplifier SKY66292-11 SKY66292-11-EVBCopyright © 2014-2017 Skyworks Solutions, Inc. All Rights Reserved.Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. 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