MS6257G 데이터 시트보기 (PDF) - MOSA ELECTRONICS
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MS6257G Datasheet PDF : 15 Pages
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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
VSS
SDA
SCL
VDD
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
L-IN 1
L-OUT 2
VSS 3
SDA 4
MS6257
8 R-IN
7 R-OUT
6 VDD
5 SCL
BLOCK DIAGRAM
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
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