SC7314
4-CH OUTPUT STEREO AUDIO PROCESSOR WITH 4 STEREO INPUTS AND
TONE/VOLUME CONTROL
DESCRIPTION
The SC7314 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 I
2
C 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.
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 I C Bus
* Loudness function
* Volume control in 1.25dB steps
* Treble and bass control
* Input and output for external equalizer or noise reduction system
2
ORDERING INFORMATION
Device
SC7314
SC7314S
SC7314D
Package
DIP-28-600-2.54
SOP-28-375-1.27
SDIP-28-400-1.778
BLOCK DIAGRAM
18
6
17
12
20
19
3
24
L
16 L1
L2
15
L3
14
L4
13
R1
8
R2
9
10
11
28
R3
R4
C
REF
Volume &
Loudness
Bass
Treble
Speaker
ATT/Mute
Volume &
Loudness
Input
Selection
&
Gain
Control
Speaker
ATT/Mute
SCL
Bass
Treble
27
Serial Bus Decoder + Latches
SDA
26
DGND
25
Supply
R
1
2
5
7
22
21
4
23
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.1
2007.09.25
Page 1 of 14
SILAN [ SILAN MICROELECTRONICS JOINT-STOCK ]
