MAX921中文资料
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5 HYST 6 REF V2
MAX921
GND 1
THRESHOLD DETECTOR ________________________________________________________________ Maxim Integrated Products 1
Call toll free 1-800-998-8800 for free samples or
______________Ordering Information
PART MAX921CPA MAX921CSA MAX921CUA MAX921C/D MAX921EPA MAX921ESA MAX921MJA TEMP. RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -55°C to +125°C PIN-PACKAGE 8 Plastic DIP 8 SO 8 µMAX Dice* 8 Plastic DIP 8 SO 8 CERDIP**
元器件交易网
Ultra Low-Power, Single/Dual-Supply Comparators MAX921–MAX924
ABSOLUTE MAXIMUM RATINGS
V+ to V-, V+ to GND, GND to V-................................-0.3V, +12V Inputs Current, IN_+, IN_-, HYST...............................................20mA Voltage, IN_+, IN_-, HYST................(V+ + 0.3V) to (V- – 0.3V) Outputs Current, REF....................................................................20mA Current, OUT_ .................................................................50mA Voltage, REF ....................................(V+ + 0.3V) to (V- – 0.3V) Voltage, OUT_ (MAX921/924) .....(V+ + 0.3V) to (GND – 0.3V) Voltage OUT_ (MAX922/923)...........(V+ + 0.3V) to (V- – 0.3V) OUT_ Short-Circuit Duration (V+ ≤ 5.5V) ...............Continuous Continuous Power Dissipation (TA = +70°C) 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW 8-Pin SO (derate 5.88mW/°C above +70°C)................471mW 8-Pin µMAX (derate 4.1mW/°C above +70°C) .............330mW 8-Pin CERDIP (derate 8.00mW/°C above +70°C)........640mW 16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)..842mW 16-Pin SO (derate 8.70mW/°C above +70°C) ................696mW 16-Pin CERDIP (derate 10.00mW/°C above +70°C) ......800mW Operating Temperature Ranges: MAX92_C_ _ .......................................................0°C to +70°C MAX92_E_ _.....................................................-40°C to +85°C MAX92_MJ_ ..................................................-55°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C
ELECTRICAL CHARACTERISTICS: 5V OPERATION
(V+ = 5V, V- = GND = 0V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER POWER REQUIREMENTS Supply Voltage Range (Note 1) MAX921, C/E temp. ranges HYST = REF M temp. range TA = +25°C MAX922 Supply Current IN+ = IN- + 100mV C/E temp. ranges M temp. range MAX923, C/E temp. ranges HYST = REF M temp. range TA = +25°C C/E temp. ranges MAX924 M temp. range COMPARATOR Input Offset Voltage Input Leakage Current (IN-, IN+) Input Leakage Current (HYST) Input Common-Mode Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio Voltage Noise Hysteresis Input Voltage Range Response Time VCM = 2.5V IN+ = IN- = 2.5V MAX921, MAX923 VV- to (V+ – 1.3V) V+ = 2.5V to 11V 100Hz to 100kHz MAX921, MAX923 TA = +25°C, 100pF load Overdrive = 10mV Overdrive = 100mV 0.1 0.1 20 REF- 0.05V 12 4 C/E temp. ranges M temp. range ±0.01 ±0.02 V+ – 1.3 1.0 1.0 REF TA = +25°C 3.1 2.5 TA = +25°C 2.5 2.5 11 3.2 4 5 3.2 4 5 4.5 6 7.5 6.5 8.5 11 ±10 ±5 ±40 mV nA nA V mV/V mV/V µVRMS V µs µA V CONDITIONS MIN TYP MAX UNITS
INTERNAL 1% PRECISION REFERENCE
INTERNAL HYSTERESIS
PACKAGE
PART
MAX921 MAX922 MAX923 MAX924
Yes No Yes Yes
1 2 2 4
Yes No Yes No
8-Pin DIP/SO/µMAX 8-Pin DIP/SO/µMAX 8-Pin DIP/SO/µMAX 16-Pin DIP/SO/µMAX
Stresses beyond those listed under “Absolute Maximum Ratings‘” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Ordering Information continued at end of data sheet. * Dice are tested at TA = +25°C, DC parameters only. ** Contact factory for availability and processing to MIL-STD-883.
COMPARATORS PER PACKAGE
____________________________Features
o µMAX Package—Smallest 8-Pin SO (MAX921/MAX922/MAX923) o Ultra-Low 4µA Max Quiescent Current Over Extended Temp. Range (MAX921) o Power Supplies: Single +2.5V to +11V Dual ±1.25V to ±5.5V o Input Voltage Range Includes Negative Supply o Internal 1.182V ±1% Bandgap Reference o Adjustable Hysteresis o TTL/CMOS-Compatible Outputs o 12µs Propagation Delay (10mV Overdrive) o No Switching Crowbar Current o 40mA Continuous Source Current
元器件交易网
19-0115; Rev 3; 3/95
Ultra Low-Power, Single/Dual-Supply Comparators
_______________General Description
The MAX921–MAX924 single, dual, and quad micropower, low-voltage comparators feature the lowest power consumption available. These comparators draw less than 4µA supply current over temperature (MAX921/MAX922), and include an internal 1.182V ±1% voltage reference, programmable hysteresis, and TTL/CMOS outputs that sink and source current. Ideal for 3V or 5V single-supply applications, the MAX921–MAX924 operate from a single +2.5V to +11V supply (or a ±1.25V to ±5V dual supply), and each comparator’s input voltage range swings from the negative supply rail to within 1.3V of the positive supply. The MAX921–MAX924’s unique output stage continuously sources as much as 40mA. And by eliminating power-supply glitches that commonly occur when comparators change logic states, the MAX921–MAX924 minimize parasitic feedback, which makes them easier to use. The single MAX921 and dual MAX923 provide a unique and simple method for adding hysteresis without feedback and complicated equations, simply by using the HYST pin and two resistors.
__________Typical Operating Circuit
VIN 7 V+ 3 IN+ OUT 8 4 IN-
________________________Applications
Battery-Powered Systems Threshold Detectors Window Comparators Oscillator Circuits
MAX921
GND 1
THRESHOLD DETECTOR ________________________________________________________________ Maxim Integrated Products 1
Call toll free 1-800-998-8800 for free samples or
______________Ordering Information
PART MAX921CPA MAX921CSA MAX921CUA MAX921C/D MAX921EPA MAX921ESA MAX921MJA TEMP. RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -55°C to +125°C PIN-PACKAGE 8 Plastic DIP 8 SO 8 µMAX Dice* 8 Plastic DIP 8 SO 8 CERDIP**
元器件交易网
Ultra Low-Power, Single/Dual-Supply Comparators MAX921–MAX924
ABSOLUTE MAXIMUM RATINGS
V+ to V-, V+ to GND, GND to V-................................-0.3V, +12V Inputs Current, IN_+, IN_-, HYST...............................................20mA Voltage, IN_+, IN_-, HYST................(V+ + 0.3V) to (V- – 0.3V) Outputs Current, REF....................................................................20mA Current, OUT_ .................................................................50mA Voltage, REF ....................................(V+ + 0.3V) to (V- – 0.3V) Voltage, OUT_ (MAX921/924) .....(V+ + 0.3V) to (GND – 0.3V) Voltage OUT_ (MAX922/923)...........(V+ + 0.3V) to (V- – 0.3V) OUT_ Short-Circuit Duration (V+ ≤ 5.5V) ...............Continuous Continuous Power Dissipation (TA = +70°C) 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ...727mW 8-Pin SO (derate 5.88mW/°C above +70°C)................471mW 8-Pin µMAX (derate 4.1mW/°C above +70°C) .............330mW 8-Pin CERDIP (derate 8.00mW/°C above +70°C)........640mW 16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)..842mW 16-Pin SO (derate 8.70mW/°C above +70°C) ................696mW 16-Pin CERDIP (derate 10.00mW/°C above +70°C) ......800mW Operating Temperature Ranges: MAX92_C_ _ .......................................................0°C to +70°C MAX92_E_ _.....................................................-40°C to +85°C MAX92_MJ_ ..................................................-55°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C
ELECTRICAL CHARACTERISTICS: 5V OPERATION
(V+ = 5V, V- = GND = 0V, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER POWER REQUIREMENTS Supply Voltage Range (Note 1) MAX921, C/E temp. ranges HYST = REF M temp. range TA = +25°C MAX922 Supply Current IN+ = IN- + 100mV C/E temp. ranges M temp. range MAX923, C/E temp. ranges HYST = REF M temp. range TA = +25°C C/E temp. ranges MAX924 M temp. range COMPARATOR Input Offset Voltage Input Leakage Current (IN-, IN+) Input Leakage Current (HYST) Input Common-Mode Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio Voltage Noise Hysteresis Input Voltage Range Response Time VCM = 2.5V IN+ = IN- = 2.5V MAX921, MAX923 VV- to (V+ – 1.3V) V+ = 2.5V to 11V 100Hz to 100kHz MAX921, MAX923 TA = +25°C, 100pF load Overdrive = 10mV Overdrive = 100mV 0.1 0.1 20 REF- 0.05V 12 4 C/E temp. ranges M temp. range ±0.01 ±0.02 V+ – 1.3 1.0 1.0 REF TA = +25°C 3.1 2.5 TA = +25°C 2.5 2.5 11 3.2 4 5 3.2 4 5 4.5 6 7.5 6.5 8.5 11 ±10 ±5 ±40 mV nA nA V mV/V mV/V µVRMS V µs µA V CONDITIONS MIN TYP MAX UNITS
INTERNAL 1% PRECISION REFERENCE
INTERNAL HYSTERESIS
PACKAGE
PART
MAX921 MAX922 MAX923 MAX924
Yes No Yes Yes
1 2 2 4
Yes No Yes No
8-Pin DIP/SO/µMAX 8-Pin DIP/SO/µMAX 8-Pin DIP/SO/µMAX 16-Pin DIP/SO/µMAX
Stresses beyond those listed under “Absolute Maximum Ratings‘” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Ordering Information continued at end of data sheet. * Dice are tested at TA = +25°C, DC parameters only. ** Contact factory for availability and processing to MIL-STD-883.
COMPARATORS PER PACKAGE
____________________________Features
o µMAX Package—Smallest 8-Pin SO (MAX921/MAX922/MAX923) o Ultra-Low 4µA Max Quiescent Current Over Extended Temp. Range (MAX921) o Power Supplies: Single +2.5V to +11V Dual ±1.25V to ±5.5V o Input Voltage Range Includes Negative Supply o Internal 1.182V ±1% Bandgap Reference o Adjustable Hysteresis o TTL/CMOS-Compatible Outputs o 12µs Propagation Delay (10mV Overdrive) o No Switching Crowbar Current o 40mA Continuous Source Current
元器件交易网
19-0115; Rev 3; 3/95
Ultra Low-Power, Single/Dual-Supply Comparators
_______________General Description
The MAX921–MAX924 single, dual, and quad micropower, low-voltage comparators feature the lowest power consumption available. These comparators draw less than 4µA supply current over temperature (MAX921/MAX922), and include an internal 1.182V ±1% voltage reference, programmable hysteresis, and TTL/CMOS outputs that sink and source current. Ideal for 3V or 5V single-supply applications, the MAX921–MAX924 operate from a single +2.5V to +11V supply (or a ±1.25V to ±5V dual supply), and each comparator’s input voltage range swings from the negative supply rail to within 1.3V of the positive supply. The MAX921–MAX924’s unique output stage continuously sources as much as 40mA. And by eliminating power-supply glitches that commonly occur when comparators change logic states, the MAX921–MAX924 minimize parasitic feedback, which makes them easier to use. The single MAX921 and dual MAX923 provide a unique and simple method for adding hysteresis without feedback and complicated equations, simply by using the HYST pin and two resistors.
__________Typical Operating Circuit
VIN 7 V+ 3 IN+ OUT 8 4 IN-
________________________Applications
Battery-Powered Systems Threshold Detectors Window Comparators Oscillator Circuits