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SC7313S Datasheet

DIGITAL CONTROLLED STEREO AUDIO PROCESSOR WITH LOUDNESS


SC7313S Datasheet Preview


Silan
Semiconductors
SC7313
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
I2C 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.
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 I2C Bus
ORDERING INFORMATION
Device
Package
SC7313
DIP-28-600-2.54
SC7313S
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
CREF 1
VDD 2
GND 3
TREBLE
L4
R5
IN(R) 6
OUT(R) 7
LOUD R 8
RIGHT
INPUTS
R3 9
R2 10
R1 11
LOUD L 12
LEFT
INPUTS
L3 13
L2 14
SC7313
28 SCL
27 SDA
26 DIG GND
BUS
INPUTS
25 OUT LF
24 OUT RF
23 OUT LR
22 OUT RR
21 BOUT(R)
20 BIN(R)
19 BOUT(L)
BASS
18 BIN(L)
17 OUT(L)
16 IN(L)
15 L1
) LEFT INPUTS
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.26
1
Page 1

Silan
Semiconductors
SC7313
BLOCK DIAGRAM
OUT
(L)
17
IN LOUDNESS B-OUT B-IN
(L) (L)
(L) (L)
16 12
19 18
TREBLE
(L)
4
INPUT SELECTION
& GAIN CONTROL
15
LEFT
INPUTS
14
13
VOLUME
& LOUDNESS
BASS
TREBLE
SPEAKER
ATT
MUTE
SPEAKER
ATT
MUTE
SERIAL BUS DECODER + LATCHES
9
RIGHT
INPUTS 10
11
VOLUME
& LOUDNESS
BASS
TREBLE
CREF 1
SUPPLY
23
7
VDD A-GND OUT
(R)
68
21 20
IN LOUDNESS B-OUT B-IN
(R) (R)
(R) (R)
5
TREBLE
(R)
SPEAKER
ATT
MUTE
SPEAKER
ATT
MUTE
LEFT
25 FRONT
OUT
LEFT
23 REAR
OUT
28 SCL
27 SDA
BUS
26 DIG-GND
RIGHT
24 FRONT
OUT
RIGHT
22 REAR
OUT
ABSOLUTE MAXIMUM RATINGS
Characteristic
Symbol
Supply Voltage
VS
Operating Temperature
Tamb
Storage Temperature
Tstg
Value
10.2
-40 ~ +85
-55 ~ +150
Unit
V
°C
°C
QUICK REFERENCE DATA
Characteristic
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
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.26
2
Page 2

Silan
Semiconductors
SC7313
ELECTRICAL CHARACTERISTICS (Refer to the test circuit)
(Tamb=25°C VS=9.0V,RL=10kRG=600all controls flat(G=0), f=1kHz,Unless otherwise specified)
Parameter
Symbol
Test conditions
Min Typ Max
SUPPLY VOLTAGE
Operating Supply Voltage
VS
6 9 10.0
Operating Supply Current
IS
20.0 35.0
Ripple rejection of Supply Voltage
INPUTS SELECTORS
SVR
60 80
Input resistance
RII Input 1,2,3
35 50 70
Clipping Level
VCL
2 2.5
Input Separation (note 2)
SIN
80 100
Output load resistance
RL Pin7,17
4
Minimum input Gain
GIN(MIN)
-1 0 1
Maximum input gain
GIN(MAX)
11.25
Step resolution
GSTEP
3.75
Input noise
eIN G=11.25dB
2
DC steps
VOLUME CONTROL
Adjacent gain steps
VDC
G=18.75 to MUTE
4 20
4
Input resistance
RIV
20 33 50
Control range
Crange
70 75 80
Minimum attenuation
AV(min)
-1 0 1
Maximum attenuation
AV(max)
70 75 80
Step resolution
ASTEP
0.5 1.25 1.75
Attenuation set error
AV=0 to –20dB
EA
AV=-20 to –60dB
-1.25 0 1.25
-3 2
Tracking error
ET
2
DC steps
SPEAKER ATTENUATORS
Adjacent attenuation steps
VDC
From 0dB to AV max
03
0.5 7.5
Control Range
Crange
35 37.5 40
Step resolution
SSTEP
0.5 1.25 1.75
Attenuation Set error
EA
1.5
Output Mute Attenuation
AMUTE
80 100
DC steps
Adjacent attenuation steps
VDC
From 0dB to MUTE
03
1 10
Unit
V
mA
dB
k
Vrms
dB
k
dB
dB
dB
µV
mV
mV
k
dB
dB
dB
dB
dB
dB
mV
mV
dB
dB
dB
dB
mV
mV
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.1 2002.02.26
3
Page 3
Part Number SC7313S
Manufactur ETC
Description DIGITAL CONTROLLED STEREO AUDIO PROCESSOR WITH LOUDNESS
Total Page 13 Pages
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