The ISL22316 integrates a single digitally controlled potentiometer (DCP) and non-volatile memory on a monolithic CMOS integrated circuit. The digitally controlled potentiometer is 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. The potentiometer has an associated volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. At power up the device recalls the contents of the DCP's IVR to the WR. The DCP can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications including control, parameter adjustments, and signal processing.


  • 128 resistor taps
  • I2C serial interface
  • Two address pins, up to four devices/bus
  • Non-volatile storage of wiper position
  • Wiper resistance: 70Ω typical @ 3.3V
  • Shutdown mode
  • Shutdown current 5µA max
  • Power supply: 2.7V to 5.5V
  • 50kΩ or 10kΩ total resistance
  • High reliability
  • Endurance: 1,000,000 data changes per bit per register
  • Register data retention: 50 years @ T≤55°C
  • 10 Ld MSOP or 10 Ld TDFN package
  • Pb-free (RoHS compliant)


Title language Type Format File Size Date
ISL22316 Datasheet Datasheet PDF 1017 KB
RKTA-SEMITECRTDEVZ User's Manual Rev.1.02 Manual - Development Tools PDF 430 KB
Digital Potentiometer (DCP) Evaluation USB Kit User Guide Manual - Development Tools PDF 1.09 MB
RTKA-BDGSTKDBEVKIT1Z User's Manual Rev.2.00 Manual - Development Tools PDF 1.09 MB
RTKA-BDGSTKEV2Z User's Manual Rev.2.00 Manual - Development Tools PDF 721 KB
AN1425: Get Precision Performance from a Digitally Controlled Potentiometer (DCP) Application Note PDF 281 KB
AN1690: Electronics Meets the Challenges of Patient Monitors Application Note PDF 377 KB
AN1699: Digital Control Potentiometers Offer Hidden Benefits for Many Designs Application Note PDF 251 KB
AN9675: A Tutorial in Coherent and Windowed Sampling with A/D Converters Application Note PDF 503 KB
AN9705: A Theoretical View of Coherent Sampling Application Note PDF 287 KB
PA14042 - Minimum Line Quantity Change Product Advisory PDF 363 KB
PCN11059 - Shipping Tube Change for Intersil MSOP Packaged Products Product Change Notice PDF 117 KB
PLC15033 - Product Discontinuance / Obsolescence NotificationProducts Product Life Cycle Notice PDF 200 KB
Vendor Item Drawing (VID) V62/08603 (ISL22316, ISL22316WM) Other 0 KB
TB458: Converting a Fixed PWM to an Adjustable PWM Other PDF 315 KB


Title language Type Format File Size Date
DCP Evaluation Board Software v6.03 Library EXE 2.56 MB
RTKA-BDGSTKDBEVKIT1Z Design Files PCB Design Files ZIP 759 KB
RTKA-BDGSTKEV2Z Design Files PCB Design Files ZIP 569 KB
RTKA-SEMITECRTDEVZ Design Files PCB Design Files ZIP 4.56 MB

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