MS6258_1 Datasheet, PDF (1/17 Pages) MOSA ELECTRONICS – Gain and Attenuation Volume Controller IC 4 Sets of Stereo Input, Low voltage Gain and Attenuation 15~-79dB

MOSA
MS6258
Gain And Attenuation Volume Controller IC
Gain and Attenuation Volume Controller IC
4 Sets of Stereo Input, Low voltage
Gain and Attenuation 15~-79dB
FEATURES
‧ Operation range: 2.7V~6.5V.
‧ Low power consumption.
‧ Gain/Attenuation: 15dB to –79dB.
‧ +1dB/step, -1dB/step and -10dB/step are controlled
independently.
‧ Good PSRR and low pop noise.
‧ I²C interface.
‧ Housed in 16 pin SOP, SSOP package.
APPLICATIONS
‧ Multimedia system.
‧ Hi-Fi audio system.
‧ MP3，PDA.
DESCRIPTION
The MS6258 is a stereo audio volume controller IC with 4 sets of stereo input. It uses CMOS technology specially
for the low voltage application with low noise, rail-to-rail output. The MS6258 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-IN1
L-IN2
L-IN3
L-IN4
R-IN1
R-IN2
R-IN3
R-IN4
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
SDA
SCL
V_REF
L-OUT
R-OUT
REV 6
1
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