AD5231 is a nonvolatile memory 1024-position digital potentiometer released by Analog Devices, which has 10 kΩ, 50 kΩ, and 100 kΩ terminal resistance options, supports SPI serial interface, and can be used for instrument gain and offset adjustment, programmable voltage to current conversion, programmable filters, delays, time constants and programmable power supply.
The AD5231 digital potentiometer provides 1024‑step resolution and nonvolatile memory that retains wiper settings across power cycles. It supports both single‑supply (3 V‑5 V) and dual‑supply (+2.5 V) operation, and includes features such as write protection, wiper read‑back, and 28 bytes of user‑defined EEMEM.
Designed for industrial temperature ranges (‑40 °C to +85 °C), the device offers multiple terminal resistance versions, programmable increment/decrement commands, and a standard 3‑wire SPI‑compatible interface. Detailed specifications, pin configurations, timing diagrams, and application examples are provided in the document.
| Resolution | 10 bits (1024 positions) |
|---|---|
| Terminal resistance options | 10 kΩ, 50 kΩ, 100 kΩ |
| Supply voltage | 3 V‑5 V single‑supply or +2.5 V dual‑supply |
| Operating temperature range | ‑40 °C to +85 °C |
| Data retention | 100 years typical at 55 °C |
The AD5231 provides 10‑bit resolution, giving 1024 discrete wiper positions.
The device is offered with 10 kΩ, 50 kΩ, and 100 kΩ terminal resistance options.
It can operate from a single 3 V‑5 V supply or from dual supplies with +2.5 V and ground.
The nonvolatile memory retains data for a typical 100 years at an ambient temperature of 55 °C.