ISL22449 is a quad digitally controlled potentiometer (DCP) from Intersil, which integrates four DCPs and non-volatile memory on a monolithic CMOS integrated circuit. The wiper position can be controlled by the user through the SPI serial interface.
The ISL22449 integrates four digitally controlled potentiometers (DCP) and non‑volatile memory on a monolithic CMOS IC. Each potentiometer provides 128 resistor taps and is programmed via an SPI serial interface, allowing the wiper position to be stored even after power‑down.
The device operates from 2.7 V to 5.5 V, draws a maximum shutdown current of 6.5 µA, and offers options of 10 kΩ or 50 kΩ total resistance. It is suitable for voltage‑divider applications such as control, parameter adjustment, AC measurement, and signal processing.
| Number of potentiometers | 4 |
|---|---|
| Resistor taps per potentiometer | 128 |
| Wiper resistance (typical) | 70 Ω |
| Total resistance options | 10 kΩ or 50 kΩ |
| Supply voltage range | 2.7 V to 5.5 V |
| Shutdown current (max) | 6.5 µA |
| EEPROM endurance | 1,000,000 cycles |
| EEPROM data retention | 50 years (T < +55 °C) |
The ISL22449 contains four digitally controlled potentiometers.
It operates from 2.7 V up to 5.5 V.
Each potentiometer provides 128 resistor taps.
The shutdown current is limited to 6.5 µA max.