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19-0542; Rev 1; 5/06
Stereo Volume Control with Rotary Encoder Interface
General Description
The MAX5440 dual, 40kΩ logarithmic taper volume control features a debounced up/down interface for use with a simple rotary encoder without using a microcontroller (µC).
Each potentiometer has 32 log-spaced tap points with a buffered wiper output and replaces mechanical potentiometers.
An integrated bias generator provides the required ((VDD + VSS) / 2) bias
voltage, eliminating the need for costly external op-amp circuits in unipolar audio applications.
A mode-indicator LED output specifies volume or balance control.
Five integrated LED drivers indicate volume level or balance s...