The ISL22349 integrates four digitally controlled potentiometers (DCP) and non-volatile memory on a monolithic CMOS integrated circuit. It features low noise, low power, I2C bus interface, etc.
The ISL22349 integrates four digitally controlled potentiometers (DCP) with non‑volatile memory on a monolithic CMOS IC. Each potentiometer offers 128 resistor taps and can be used as a voltage divider for control, parameter adjustment, AC measurement, and signal processing.
Key features include a 2.7 V‑5.5 V supply range, low shutdown current (6.5 µA max), 10 kΩ or 50 kΩ total resistance options, and a 14‑lead TSSOP package. The device supports an I²C‑compatible serial interface with up to eight devices on the bus and provides both volatile and non‑volatile registers for wiper position storage.
| Number of potentiometers | Four |
|---|---|
| Resistor taps per potentiometer | 128 |
| Supply voltage range | 2.7 V to 5.5 V |
| Shutdown current (max) | 6.5 µA |
| Endurance (data changes per bit) | 1,000,000 cycles |
| Data retention (temperature < +55 °C) | 50 years |
| Wiper resistance (typical) | 70 Ω |
| Package type | 14‑lead TSSOP |
| Operating temperature range | -40 °C to +125 °C |
The device operates from 2.7 V up to 5.5 V.
Each digitally controlled potentiometer provides 128 taps.
The maximum shutdown current is 6.5 µA.
It is supplied in a 14‑lead thin‑shrink small‑outline plastic (TSSOP) package.