Silan
Semiconductors
DIGITAL CONTROLLED STEREO
AUDIO PROCESSOR WITH LOUDNESS
DESCRIPTION
The SC7313 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 BIPOLAR/CMOS technology, low
distortion, low noise and low DC stepping are obtained.
SC7313
SOP-28
DIP-28
FEATURES
* Input multiplexer:
--3 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
2
ORDERING INFORMATION
Device
SC7313
SC7313S
Package
DIP-28-600-2.54
SOP-28-375-1.27
* Loudness function
* Volume control in 1.25dB steps
* Treble and bass control
* Input and output for external equalizer or
noise reduction system
PIN CONFIGURATIONS
C
REF
V
DD
GND
L
TREBLE
R
IN(R)
OUT(R)
LOUD R
R3
RIGHT
INPUTS
5
6
7
8
9
24
OUT RF
23
OUT LR
1
2
3
4
28
SCL
27
SDA
26
DIG GND
25
OUT LF
BUS
INPUTS
SC7313
22
OUT RR
21
BOUT(R)
20
BIN(R)
BASS
R2
10
R1
11
19
BOUT(L)
18
BIN(L)
17
OUT(L)
16
IN(L)
15
L1
LOUD L
12
LEFT
INPUTS
L3
13
L2
14
)
LEFT INPUTS
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1
2002.02.26
1