ISL22319 is a digitally controlled potentiometer from Intersil, featuring 128 resistor taps, I2C serial interface, and non-volatile storage of wiper position. It can be used 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 low‑noise, low‑power design, and an I²C‑compatible serial interface for setting the wiper position, which can be stored in volatile and non‑volatile registers.
Key specifications include a supply voltage range of 2.7 V to 5.5 V, shutdown current of 54 µA max, wiper resistance of 70 Ω typical at 3.3 V, and endurance of 1 000 000 data changes per bit with a retention of 50 years at ≤+55 °C. The device is supplied in an 8‑lead MSOP package and is RoHS‑compliant.
| Resistor taps | 128 |
|---|---|
| Supply voltage | 2.7 V to 5.5 V |
| Shutdown current | 54 µA max |
| Wiper resistance | 70 Ω typical @ 3.3 V |
| Endurance (EEPROM) | 1 000 000 cycles |
| Data retention | 50 years @ ≤+55 °C |
The device operates from 2.7 V up to 5.5 V.
It provides 128 resistor taps.
The shutdown current is specified as 54 µA max.
The EEPROM can endure up to 1 000 000 write cycles per bit.