SD7402 Silan Microelectronics, SD7402 Datasheet - Page 4

• Manufacturer Part Number: SD7402
• Description: Three-Channel Audio Amplifier
• Manufacturer: Silan Microelectronics

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PIN DESCRIPTION
FUNCTION DESCRIPTION
1.
The second-order filter structure shown as above is adopted for 3-channel audio amplifier, with in-band gain of
about 12dB and -3dB bandwidth of 40kHz above which is well meet audio requirements. As principle structure,
in-band gain is decided by:
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
Pin No.
Channel amplifier
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Pin Name
SUB OUT
MIC OUT
STBY_N
PMUTE
SUB IN
MIC IN
R OUT
MUTE
L OUT
GND
R IN
V
L IN
V
NC
NC
CC
SS
G −
=
R
R
2
1
, thus, gain can be adjusted by changing R1.
I/O
I/O
--
O
O
O
O
--
--
--
--
I
I
I
I
I
I
Positive power supply
POP restrain control
Microphone input
Mute control
Left channel input
Right channel input
Subwoofer input
no connection
no connection
Subwoofer output
Right channel output
Left channel output
Microphone output
Standby control
Negative power supply
Ground
Pin Description
REV:1.0
Page 4 of 7
2009.11.11