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PDF SM7347A Data sheet ( Hoja de datos )
| Número de pieza | SM7347A | |
| Descripción | 6 CHANNELS VOLUME CONTROLLER | |
| Fabricantes | SamHop Microelectronics | |
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SAMHOP Microelectronics Corp.
6 CHANNELS VOLUME CONTROLLER
SM7347A
GENERAL DESCRIPTION
The SM7347A is 6 channels electronic volume
controlled by 3-wire serial data. The IC is suitable
for use in DVD systems and AV.
APPLICATIONS
* DVD Receivers
* Home Audio equipment
* AV
FEATURES
* Built-in microcomputer interface circuit con-
trolled by 16-bit serial data.
* Electronic volume
Volume level......0dB~-95dB, - ∞dB(1dB/
step)
PIN ASSIGNMENTS
BLOCK DIAGRAM
DVDD
AVDD
SWin
GNDS
SRin
SLin
GNDC
Cin
GNDR
GNDL
Rin
Lin
NC
NC
1 28
2 27
3 26
4 25
5 24
6 23
7 22
8 21
19
01
1
21
31
4
20
19
18
17
16
15
SOP 28PIN
CLK
DATA
LATCH
DGND
AGND
SWout
SRout
SLout
Cout
Rout
Lout
AVSS
NC
NC
C input
SW input
SL input
SR input
L input
R input
volume
μ-com
interface
Latch Data CLK
C output
SW output
SL output
SR output
L output
R output
Page 1
MAY.2003
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
SAMHOP Microelectronics Corp.
6 CHANNELS VOLUME CONTROLLER
SM7347A
RECOMMENDED OPERATING CONDITION
Parameter Symbol
Analog positive
Supply Voltage
AVDD
Analog negative
Supply Voltage AVSS
Digital
Supply Voltage
DVDD
High-level Input
Voltage
VIH
Low-level Input
Voltage
VIL
Condition
Min.
6.0
- 8.0
4.5
DVDDX0.7
DGND
Typ.
7.0
- 7.0
5.0
－
－
Note1 : AVSS<DGND<DVDD<AVDD or AVSS<DGND<AVDD<DVDD
Note2 : AGND=(AVSS+AVDD ) / 2
Max.
Unit
8.0 V
- 6.0
V
5.5 V
DVDD
V
DVDDX0.3 V
DATA TIMING(Recommended conditions)
DATA
H
L
CLOCK
H
L
D0 D1
DE DF
LATCH
H
L
Note: CLOCK and LATCH function at raising edges of pulse.
Page 5
D0
MAY.2003
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
SAMHOP Microelectronics Corp.
6 CHANNELS VOLUME CONTROLLER
SM7347A
ELECTRICAL CHARACTERISTICS
( Ta=25℃,AVDD=7.0V, AVSS=-7.0V, DVDD=5.0V, f=1kHz, unless otherwise noted. Rg=1KΩ, Rl=10KΩ,
VOLUME are set to 0dB/FLAT )
(1)Power Supply Characteristics
Parameter
Analog positive circuit
current
Analog negative circuit
current
Digital circuit current
Symbol
Aldd
Alss
Dldd
Test condition
Current at pin 2
No signal input
Current at pin 17
No signal input
Current at pin 1
No signal input
Limits
Min typ Max
－ 24 35
－ 24 35
－ 1.0 2.0
Unit
mA
mA
mA
(2)Input／Output Characteristics
Parameter
Symbol
Input resistance
Maximum output
voltage
Pass gain
Rin
VOM
Gv
Distortion
THD
Output noise
voltage
Vn(VOL)
Signal to noise ratio
S/N
Maximum
attenuation
Volume gain
between channels
Crosstalk between
channels
ATTmax
Dvol
CT
Port output current
IL
Test condition
3,5,6,8,11,12pin
3,5,6,8,11,12pin INPUT
18~23pin OUTPUT, THD=1%
Vi=0.2Vrms,FLAT
3,5,6,8,11,12pin INPUT
18~23pin OUTPUT
BW=400~30kHz
Vi=0.2Vrms,RL=10KΩ
18~23pin
JIS-A,VOL=0dB
all gains=0dB; Vo=1Vrms
18~23 pin
JIS-A,VOL=-∞dB
Vo=0.5Vrms,RL=10KΩ,
JIS-A, Rg=1KΩ
RL=22KΩ
Limits
Min typ Max
Unit
35 70 150 KΩ
3.0 4.2 － Vrms
-2.0 0 2.0 dB
－ 0.004 0.09 %
－ 4 6 μVrms
－ 98 105 dB
－ -100 -95 dB
-1.5 0 1.5 dB
－ -100 -75 dB
0.2 － － mA
Page 11
MAY.2003
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet SM7347A.PDF ] | |
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