MS6257_1 Datasheet, PDF (1/17 Pages) MOSA ELECTRONICS – 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~6.5V
•Low power consumption
•Gain / Attenuation: 15 to –79dB
•+1dB/step, -1dB/step and -10dB/step are controlled
independently
•I²C interface
•Housed in 8 pin SOP package
APPLICATIONS
•Multimedia system
•Hi-Fi audio system
•MP3, PDA
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. The gain and attenuation, +1dB/step, -1dB/step and -10dB/step are controlled independently.
The initial condition is set to be maximum attenuation –79dB (-70dB + -9dB), gain 0dB and mute on mode when the
power is up.
BLOCK DIAGRAM
L-IN
R-IN
Gain 0~15dB
1dB/Step
Attenuation 0~-79dB
-1dB/Step
-10dB/Step
Serial Bus Decoder and Latches
Mute
Control
1dB/Step
Gain 0~15dB
-1dB/Step
-10dB/Step
Attenuation 0~-79dB
REF
I²C Interface
Reference
Circuit
L-OUT
R-OUT
SDA
SCL
REV 6
1
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