CS3310电子音量控制芯片

2
DS82PP3
CS3310
DIGITAL CHARACTERISTICS (TA = 25 °C, VA+ , VD+ = 5V ± 5%, VA- = -5V ± 5% )
Parameter
Symbol Min
Typ
Max
Unit
High-Level Input Voltage Low-Level Input Voltage High-Level Output Voltage Low-Level Output Voltage Input Leakage Current
ABSOLUTE MAXIMUM RATINGS (AGND, DGND = 0V, all voltages with respect to ground.)
Parameter
DC Power Supplies:
Positive Digital Positive Analog Negative Analog
110 dB
I
Description
The CS3310 is a complete stereo digital volume control designed specifically for audio systems. It features a 16bit serial interface that controls two independent, low distortion audio channels.
DGND
AGNDL AGNDR
5
15
10
*Required to terminate SDATAI due to high impedance state of SDATAO when CS is high. **Refer to Note 3.
Figure 2. Recommended Connection Diagram
— -95.5 dB Attenuation — +31.5 dB Gain
l Low Distortion & Noise
— 0.001% THD+N — 116 dB Dynamic Range
l Noise Free Level Transitions l Channel-to-Channel Crosstalk Better Than
(I O = 200µA) (I O = 3.2mA)
VIH
2.0
-
VD+0.3 V
VIL
-0.3
-
+0.8
V
VOH
VD-1.0
-
-
V
VOL
-
-
0.4
V
Iin
-
1.0
10
µA
SWITCHING CHARACTERISTICS (TA = 25 °C; VA+, VD+ = +5V ± 5%; VA- = -5V ± 5%; CL = 20 pF)
Output Noise
(Note 1)
-
4.2
8.4 µVrms
Digital Feedthrough (Peak Component)
(Note 2)
-80
-
-
dB
Interchannel Isolation (1 kHz)
(Note 2)
-100
-110
-
dB
Output Buffer
Offset Voltage Load Capacitance
DS82PP3
5
CS3310
GENERAL DESCRIPTION
The CS3310 is a stereo, digital volume control designed for audio systems. The levels of the left and right analog input channels are set by a 16-bit serial data word; the first 8 bits address the right channel and the remaining 8 bits address the left channel, as detailed in Table 1. Resistor values are decoded to 0.5 dB resolution by an internal multiplexer for a total attenuation range of -95.5 dB. An output amplifier stage provides a programmable gain of up to 31.5 dB in 0.5 dB steps. This results in an overall 8bit adjustable range of 127 dB.
tCSH
-
tSSD
-
tCSDH
-
-
35
ns
-
60
ns
-
100
ns
CS
SCLK SDATAI SDATAO
t CSVS
t SDVS t SDH
MSB
t CSH
t SSD
Figure 1. Serial Port Timing Diagram
t LTH t CSDH
DS82PP3
3
CS3310
RECOMMENDED OPERATING CONDITIONS (DGND = 0V; all voltages with respect to ground)
Products from P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581
Copyright © Cirrus Logic, Inc. 1999 (All Rights Reserved)
Iin
-
VIND
-0.3
TA
-55
TSTG
-65
Max
Unit
(VA+)+ 0.3
V
6.0
V
-6.0
V
±10
mA
(VA+) + 0.3
V
+125
°C
+150
°C
4
DS82PP3
CS3310
+ 10 µF
10**
0.1 µF
14
ZCEN VD+
CONTROLLER
2 CS
3 SDATAI
6 SCLK
-0.3
-
0.0
V
Ambient Operating Temperature
TA
0
25
70
°C
Notes: 3. Applying power to VD+ prior to VA+ creates a SCR latch-up condition. Refer to Figure 2 for the recommended power connections.
IA+
-
5.0
8.0
mA
IA-
-
5.0
8.0
mA
ID+
-
350
800
µA
Power Consumption Power Supply Rejection Ratio (250 Hz)
PD
-
PSRR
-
52.0
84.0
mW
80
-
dB
Notes: 1. Measured with input grounded and Gain = 1. Will increase as a function of Gain settings >1. 2. This parameter is guaranteed by design and/or characterization.
RIN
8
10
-
kΩ
CIN
-
10
-
pF
Total Harmonic Distortion plus Noise (V in = 2V rms, 1 kHz) THD+N
-
0.001 .0025
%
Dynamic Range
110
116
-
dB
Input/Output Voltage Range
(VA-)+1.25 - (VA+)-1.25 V
FEB ‘99 DS82PP3
1
CS3310
ANALOG CHARACTERISTICS (TA = 25 °C, VA+, VD+ = 5 V ± 5%; VA- = -5V ± 5%; Rs = 0; RL =
2 kΩ; CL = 20 pF; 10 Hz to 20 kHz Measurement Bandwidth; unless otherwise specified)
ORDERING INFORMATION CS3310-KP 0° to 70° C
CS3310-KS 0° to 70° C
16-pin Plastic DIP 16-pin Plastic SOIC
AINL 16ABiblioteka NDL 15 AGNDR10
9 AINR
+ -
MUX
8 8
Control Register