MS6257

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 1 2 3 4 5 6 7 8 Description Left channel input Left channel output Ground I2C data input I2C clock input Positive supply voltage Right channel output Right channel input L-IN 1 L-OUT 2 VSS 3 SDA 4 8 R-IN MS6257 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 -10dB/STEP REF R-OUT I2C Interface Reference Circuit SDA REV 1 SCL 1 www.mosanalog.com.tw MOSA ORDERING INFORMATION Package 8-Pin SOP 8-Pin SOP 8-Pin SOP (lead free) 8-Pin SOP (lead free) Part number MS6257TR MS6257U MS6257GTR MS6257GU MS6257 MS6257 MS6257 GAIN AND ATTENUATION VOLUME CONTROLLE...