Log Taper Digital Potentiometers - Maxim Integrated
Description
19-2049; Rev 3; 1/05
Dual, Audio, Log Taper Digital Potentiometers
MAX5408–MAX5411
General 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).
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