MS6257 Datasheet, PDF (1/11 Pages) List of Unclassifed Manufacturers – Gain and Attenuation Volume Controller IC One Set of Stereo Input, Low voltage Gain and Attenuation 15~-79dB

MOSA
MS6257
GAIN AND ATTENUATION VOLUME CONTROLLER IC


Gain and Attenuation Volume Controller IC
One Set of Stereo Input, Low voltage
Gain and Attenuation 15~-79dB
FEATURES
‧Operation range: 2.7V~5.5V
‧Low power consumption
‧Gain/Attenuation: 15dB to –79dB at 1dB/step
‧Housed in 8 pin SOP package
‧I²C interface
APPLICATIONS
‧Multimedia system
‧Hi-Fi audio system
‧MP3, PDA
‧Cross-reference PT2257, PT2259
DESCRIPTION
The MS6257 is the stereo audio volume controller IC. It uses CMOS technology specially for the low voltage
application with low noise, rail-to-rail output. The MS6257 provide an I²C control interface with gain / attenuation
range of 15dB to –79dB, 1dB/step. The initial condition is set to be maximum attenuation –79dB and mute on mode
when the power is up.


PIN CONFIGURATION
Symbol
L-IN
L-OUT
V_SS
SDA
SCL
V_DD
R-OUT
R-IN
Pin
Description
1 Left channel input
2 Left channel output
3 Ground
4 I²C data input
5 I²C clock input
6 Positive supply voltage
7 Right channel output
8 Right channel input
BLOCK DIAGRAM
L-IN 1
L-OUT 2
V_SS 3
SDA 4
MS6257
8 R-IN
7 R-OUT
6 V_DD
5 SCL




L-IN
1dB/STEP
-1dB/STEP
-10dB/STEP
L-OUT
Serial Bus Decoder and Latches
R-IN
1dB/STEP
-1dB/STEP
I2C Interface
-10dB/STEP
REF
R-OUT
Reference
Circuit
REV 1
SDA
SCL
1


www.mosanalog.com.tw