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PDF SC7313 Data sheet ( 特性 )

部品番号 SC7313
部品説明 4-CH OUTPUT STEREO AUDIO PROCESSOR
メーカ Silan Microelectronics
ロゴ Silan Microelectronics ロゴ 

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SC7313 Datasheet, SC7313 PDF,ピン配置, 機能
SC7313
4-CH OUTPUT STEREO AUDIO PROCESSOR WITH 3 STEREO INPUTS AND
TONE/VOLUME CONTROL
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 CMOS
technology, low distortion, low noise and low DC stepping are obtained.
FEATURES
* Input multiplexer:
--3 stereo inputs
--Selectable input gain
* 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
* Treble and bass control
* Input and output for external equalizer or noise reduction system
ORDERING INFORMATION
Device
SC7313
SC7313S
Package
DIP-28-600-2.54
SOP-28-375-1.27
BLOCK DIAGRAM
7 17
L1
15
L2
14
L3
13
R3
9
R2
10
R1
11
Input
Selection
&
Gain
Control
CREF
1 Reference
16 12 19 18 4 25 23
Volume &
Loudness
Bass
Treble
Speaker/
ATT
Serial Bus Decoder + Latches
SCL 28
SDA
27
DGND 26
Volume &
Loudness
Bass
Treble
Spaker/
ATT
2
3
68
21 20
5
22 24
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2 2007.03.09
Page 1 of 14

1 Page





SC7313 pdf, ピン配列
SC7313
(Continued)
Parameter
VOLUME CONTROL
Input Resistance
Control Range
Minimum Attenuation
Maximum Attenuation
Step Resolution
Attenuation Set Error
Tracking Error
DC Steps
SPEAKER ATTENUATORS
Control Range
Step Resolution
Attenuation Set Error
Output Mute Attenuation
DC Steps
BASS CONTROL (note 1)
Control Range
Step Resolution
Internal Feedback Resistance
TREBLE CONTROL (note 1)
Control Range
Step Resolution
AUDIO OUTPUTS
Clipping Level
Output Load Resistance
Output Load Capacitance
Output Resistance
DC Voltage Level
GENERAL
Output Noise
Signal to Noise Ratio
Symbol
Test conditions
Min. Typ. Max. Unit
RIV
Crange
AV(min)
AV(max)
ASTEP
AV=0 to –20dB
EA
AV=-20 to –60dB
ET
Adjacent attenuation steps
VDC
From 0dB to AV max
20 33 50
70 75 80
-1 0 1
70 75 80
0.5 1.25 1.75
-1.25 0 1.25
-3 2
2
03
0.5 7.5
k
dB
dB
dB
dB
dB
dB
mV
mV
Crange
SSTEP
EA
AMUTE
Adjacent attenuation steps
VDC
From 0dB to MUTE
35 37.5 40 dB
0.5 1.25 1.75 dB
1.5 dB
80 100
dB
0 3 mV
1 10 mV
GB Maximum boost/cut
BSTEP
RB
±12 ±14 ±16 dB
1 2 3 dB
34 44 58 k
Gt Maximum boost/cut
TSTEP
±13 ±14 ±15
123
dB
dB
VOCL
RL
CL
ROUT
VOUT
THD=0.3%
2 2.5
Vrms
4 k
10 nF
30 75 120
4.2 4.5 4.8 V
BW=20 ~20kHz,flat
output muted
eNO BW=20 ~20kHz,flat
All gains=0dB
A curve, all gains =0 dB
S/N All gains=0dB; Vo=1Vrms
3 µV
5 15 µV
4 µV
106 dB
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2 2007.03.09
Page 3 of 14


3Pages


SC7313 電子部品, 半導体
SC7313
Fig. 19 Acknowledge on the I2C BUS
6. Transmission without acknowledge
Without detecting the acknowledge of the audioprocessor, the microprocessor can use a simpler transmission:
simply it waits one clock without checking the slave acknowledgig, and sends the new data.
This approach of course is less protected from mis-working and decreases the noise immunity.
SOFTWARE SPECIFICATION
1. Interface protocol
The interface protocol comprises:
A start conditions
A chip address byte, containing the SC7313 address(the 8th bit of the bytes must be 0). The SC7313
must always acknowledge at the end of each transmitted byte.
A sequence of data(N-bytes + acknowledge)
A stop condition (P)
2. Chips address
1 (MSB) 0 0 0 1 0 0 0 (LSB)
3. Data bytes
MSB
LSB
Function
0 0 B2 B1 B0 A2 A1 A0 Volume Control
1 1 0 B1 B0 A2 A1 A0 Speaker ATT LR
1 1 1 B1 B0 A2 A1 A0 Speaker ATT RR
1 0 0 B1 B0 A2 A1 A0 Speaker ATT LF
1 0 1 B1 B0 A2 A1 A0 Speaker ATT RF
0 1 0 G1 G0 S2 S1 S0 Audio switch
0 1 1 0 C3 C2 C1 C0 Bass control
0 1 1 1 C3 C2 C1 C0 Treble control
Note: Ax=1.25dB steps;Bx=10dB steps;Cx=2dB steps;Gx=3.75dB steps
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2 2007.03.09
Page 6 of 14

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