Features and Benefits
- 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
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).
- Fading and Balancing Stereo Signals
- Mechanical Potentiometer Replacements
- Stereo Volume Control
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
MAX5408 Reliability Data1/12/202330K
Analog ICs for Low Voltage Systems3/23/2006
Audio Gain Control Using Digital Potentiometers12/26/2002
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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