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Dual, Audio, Log Taper Digital Potentiometers

Product Details

Key Features

Applications/Uses

Simplified Block Diagram

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Key Features

  • Log Taper with 2dB Steps Between Taps
  • 32-Tap Positions for Each Wiper
  • Small 16-Pin QSOP/QFN Packages
  • Single-Supply Voltage Operation
    • +2.7V to +3.6V (MAX5408/MAX5409)
    • +4.5V to +5.5V (MAX5410/MAX5411)
  • Low 0.5µA Standby Supply Current
  • Zero-Crossing Detection for Clickless Switching
  • Mute Function to -90dB
  • 10kΩ Fixed Resistance Value
  • 3-Wire SPI-Compatible Serial Data Interface
  • Power-On Reset: Wiper Goes to Maximum Attenuation
  • Digital Output for Readback and Daisy-Chaining Capabilities

Applications/Uses

  • Fading and Balancing Stereo Signals
  • Mechanical Potentiometer Replacements
  • Stereo Volume Control

Description

The MAX5408-MAX5411 dual, logarithmic taper digital potentiometers, with 32-tap points each, replace mechanical potentiometers in audio applications requiring digitally controlled resistors. The MAX5408/MAX5410 are dual potentiometers with one wiper per potentiometer. The MAX5409/MAX5411 are dual potentiometers with two wipers per potentiometer (see Functional Diagram). An SPI™-compatible serial interface controls the wiper positions. The MAX5408- MAX5411 have a factory-set resistance of 10kΩ per potentiometer. A zero-crossing detect feature minimizes the audible noise generated by wiper transitions. The MAX5408-MAX5411 have nominal temperature coefficients of 35ppm/°C end-to-end and 5ppm/°C ratiometric. The MAX5408-MAX5411 are available in 16-pin QSOP and 16-pin thin QFN packages and are specified over the extended temperature range (-40°C to +85°C).

Simplified Block Diagram

MAX5408, MAX5409, MAX5410, MAX5411: Functional Diagram MAX5408, MAX5409, MAX5410, MAX5411: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .