Stereo Volume Control With Pushbutton Interface

The MAX5486 dual 40k logarithmic taper volume con- trol features a debounced pushbutton up/down Interface that controls volume and balance in Audio applications. Each potentiometer has 32 log-spaced tap points with a buffered wiper output to replace mechanical potentiome- ters. An integrated bias generator provides the required ((VDD + VSS) / 2) bias voltage, eliminating the need for costly external op-amp circuits in unipolar Audio applica- tions. A mode-indicator LED output indicates volume or balance control. Five integrated LED Drivers indicate vol- ume level or balance settings, depending on the status of the mode indicator. By Maxim Integrated Products