Click to expand full text
DATASHEET
ISL22102
32 Tap, Push-Button, Dual Audio Logarithmic Potentiometer with Buffer Amplifiers and Audio Detection
FN6788 Rev 2.00 September 21, 2015
The ISL22102 integrates two digitally controlled potentiometers (DCP) with buffered wiper outputs and an internal bias voltage generator (VB) on a monolithic CMOS integrated circuit. The wiper position is adjusted by the user through simple Up and Down push buttons, ideal for stereo volume control in audio applications.
Each potentiometer is implemented using 31 polysilicon resistors in a logarithmic array. Between each of the resistors are tap points connected to the wiper terminal through switches. When powered up, the wipers are reset to the -20dB position.
ISL22102 Datasheet
