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