The ISL90842 integrates four digitally controlled potentiometers (DCP) configured as variable resistors on a monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented with a combination 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 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. The DCPs can be used as two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing.


  • Four variable resistors in one package
  • 256 resistor taps - 0.4% resolution
  • I2C serial interface
  • Wiper resistance: 70Ω typical @ 3.3V
  • Standby current <5µA max
  • Power supply: 2.7V to 5.5V
  • 50kΩ, 10kΩ total resistance
  • 14 Lead TSSOP
  • Pb-free plus anneal available (RoHS compliant)




Type Title Date
Datasheet PDF 922 KB
Manual - Development Tools PDF 1.40 MB
Product Advisory PDF 363 KB
Application Note PDF 281 KB
Application Note PDF 513 KB
Application Note PDF 251 KB
Other PDF 315 KB
Application Note PDF 503 KB
Application Note PDF 287 KB
9 items

Design & Development

Software & Tools

Software Downloads

Type Title Date
Library EXE 2.56 MB
1 item