Electronic Volume Controller IC
PIN CONFIGURATION
LIN
LOUT
VS S
SDA
PT 2 25 7
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2257
RIN
ROUT
VDD
SCL
PIN DESCRIPTION
Pin Name
LIN
LOUT
VSS
SDA
SCL
VDD
ROUT
RIN
I/O
Description
I
Left input channel
Connect a capacitor to audio source
O
Left output channel
Connect a capacitor to audio output
- Ground
I
I2C data input
I
I2C clock input
- Power supply
O
Right output channel
Connect a capacitor to audio output
I
Right input channel
Connect a capacitor to audio source
Pin No.
1
2
3
4
5
6
7
8
PT2257 V1.4
-3-
May, 2008