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Silan Microelectronics

SC7312S Datasheet Preview

SC7312S Datasheet

4CH OUTPUT STEREO AUDIO PROCESSOR

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SC7312
4-CH OUTPUT STEREO AUDIO PROCESSOR WITH 4 STEREO INPUTS AND
TONE/VOLUME CONTROL
DESCRIPTION
The SC7312 is a volume, tone (bass and treble), balance (left/ right)
and fader(front/rear) processor for quality audio applications in car radio
and Hi-Fi systems. Selectable input gain and external loudness function
are provided. Control is accomplished by serial I2C bus microprocessor
interface. The AC signal settings is obtained by resistor networks and
switches combined with operational amplifiers. Due to the Used CMOS
technology, low distortion, low noise and low DC stepping are obtained.
SOP-32-375-1.27
FEATURES
* Input multiplexer:
--4 stereo inputs
--Selectable input gain for optimal adaptation to different
sources
* Four speaker attenuators:
--4 independent speakers control in 1.25dB steps for
balance and fader facilities
--Independent mute function
* All functions programmable via serial I2C Bus
* Loudness function
* Volume control in 1.25dB steps
ORDERING INFORMATION
Device
SC7312S
Package
SOP-32-375-1.27
* Treble and bass control
* Input and output for external
equalizer or noise reduction system
BLOCK DIAGRAM
www.DataSheet4U.com
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2 2004.08.03
Page 1 of 13




Silan Microelectronics

SC7312S Datasheet Preview

SC7312S Datasheet

4CH OUTPUT STEREO AUDIO PROCESSOR

No Preview Available !

SC7312
ABSOLUTE MAXIMUM RATINGS
Characteristics
Supply Voltages
Operating Temperature
Storage Temperature
Symbol
VS
Tamb
Tstg
Ratings
10.2
-40 ~ +85
-55 ~ +150
Unit
V
°C
°C
QUICK REFERENCE DATA
Characteristics
Supply Voltage
Maximum Input Signal Handling
Total Harmonic Distortion ,V=1Vrms,
f=1kHz
Signal to Noise Ratio
Channel Separation, f=1kHz
Volume Control, 1.25dB step
Bass and Treble Control, 2dB step
Fader and Balance Control, 1.25dB
step
Input Gain, 3.75dB Step
Mute Attenuation
Symbol
Vs
VCL
THD
S/N
Sc
Min.
6
2
-78.75
-14
-38.75
0
Typ.
9
0.01
106
103
100
Max.
10
0.1
0
+14
0
11.25
Unit
V
Vrms
%
dB
dB
dB
dB
dB
dB
dB
ELECTRICAL CHARACTERISTICS (Refer to the test circuit)
(Tamb=25°C, VS=9.0V, RL=10k, RG=600, all controls flat(G=0), f=1kHz,Unless otherwise specified)
Characteristics
Symbol
Test conditions
Min. Typ. Max.
www.DataShSeUetP4UP.LcYomVOLTAGE
Operating Supply Voltage
VS
6 9 10.0
Unit
V
Operating Supply Current
IS
20.0 35.0 mA
Ripple Rejection of Supply Voltage
INPUTS SELECTORS
SVR
60 80
dB
Input Resistance
RII Input 1, 2, 3, 4
35 50 70 k
Clipping Level
VCL
2 2.5
Vrms
Input Separation (note 2)
SIN
80 100
dB
Output Load Resistance
RL Pin 8, 21
4 k
Minimum Input Gain
GIN(MIN)
-1 0 1 dB
Maximum Input gain
GIN(MAX)
11.25
dB
Step Resolution
GSTEP
3.75 dB
Input Noise
eIN G=11.25dB
2 µV
DC Steps
Adjacent gain steps
VDC
G=18.75 to MUTE
4 20 mV
4 mV
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2 2004.08.03
Page 2 of 13


Part Number SC7312S
Description 4CH OUTPUT STEREO AUDIO PROCESSOR
Maker Silan Microelectronics
Total Page 12 Pages
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