General Description
The MAX5456/MAX5457 dual, logarithmic taper digital potentiometers feature a simple pushbutton interface that controls volume and balance in audio applications. Each potentiometer has 32 tap points and replaces mechanical potentiometers. Refer to the MAX5408– MAX5411 data sheet for SPI™ versions of the MAX5456/ MAX5457.

Features
♦ SmartWiper Control Provides Accelerated Wiper Motion
♦ Debounced Pushbutton Interface with Internal Pullup Resistors
♦ Logarithmic Taper with 2dB Steps Between Taps
♦ Single +2.7V to +5.5V or Dual ±2.7V Supply Operation
♦ Low 0.5µA Standby Supply Current
♦ Clickless Switching
♦ 10kΩ End-to-End Fixed Resistance Value
♦ Mute Function to -90dB (typ)
♦ Power-On Reset to -12dB Wiper Position
♦ 32 Tap Positions for Each Wiper
♦ Small 16-Pin QSOP/TQFN Packages

Applications
    Stereo Volume Control
    Fading and Balancing Stereo Signals
    Stereo Blending and Mixing