The ISL22319 is a single digitally controlled potentiometer (DCP) with low noise, low power, I2C bus, 128 taps, and wiper only. It can be used as a voltage divider in a wide variety of applications including control, parameter adjustments, AC measurement, and signal processing.
The ISL22319 integrates a single digitally controlled potentiometer (DCP) and non‑volatile memory on a monolithic CMOS IC. It offers 128 resistor taps, a wiper‑only architecture, and a serial I²C‑compatible interface for addressable control of the wiper position. The device operates from 2.7 V to 5.5 V and includes shutdown mode, high reliability, and a 50‑year data‑retention specification.
Typical applications include voltage‑divider circuits for control, parameter adjustment, AC measurement and signal‑processing tasks. The datasheet provides absolute maximum ratings, analog and operating specifications, serial interface timing, performance curves, and package dimensions for the 8‑lead MSOP form factor.
| Number of resistor taps | 128 |
|---|---|
| Supply voltage range | 2.7 V to 5.5 V |
| Endurance (data changes per bit) | 1,000,000 cycles |
| Data retention (temperature < 55 °C) | 50 years |
The device operates from 2.7 V to 5.5 V.
It provides 128 resistor taps.
The non‑volatile registers retain data for 50 years at temperatures below 55 °C.