Datasheet Summary
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Quad Digitally Controlled Potentiometers (XDCP™)
November 14, 2006
FN8086.2
Low Noise, Low Power I2C® Bus, 256 Taps
The ISL90840 integrates four digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit.
The digitally controlled potentiometers are implemented with a bination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the I2C bus interface. Each potentiometer has an associated volatile Wiper Register (WR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. When powered on the...