The ISL22446 is a monolithic CMOS integrated circuit that integrates four digitally controlled potentiometers (DCP) and non-volatile memory. The product features low noise, low power consumption, SPI serial interface, and 128 resistor taps. It can be used as three-terminal potentiometers or two-terminal variable resistors in a wide range of applications including control, parameter adjustments, and signal processing.
The ISL22446 integrates four digitally controlled potentiometers (DCP) and non‑volatile memory on a single CMOS IC. Each potentiometer can be used as a three‑terminal potentiometer or a two‑terminal variable resistor and is programmed via an SPI serial interface.
The device offers 128 resistor taps, typical wiper resistance of 70 Ω at 3.3 V, and operates from 2.7 V to 5.5 V. It is available in 20‑lead TSSOP and 20‑lead TQFN packages and meets RoHS requirements.
| Number of potentiometers | 4 |
|---|---|
| Resistor taps per potentiometer | 128 |
| Interface | SPI serial interface |
| Shutdown current (max) | 54 µA |
| Supply voltage range | 2.7 V to 5.5 V |
| Endurance (non‑volatile memory) | 1,000,000 data changes per bit |
| Data retention (non‑volatile memory) | 50 years @ T < +55 °C |
The ISL22446 integrates four digitally controlled potentiometers.
It operates from 2.7 V up to 5.5 V.
Each potentiometer provides 128 resistor taps.