The AD5232 is a 256-bit dual-channel digital potentiometer with nonvolatile memory from Analog Devices. It can retain wiper settings and has other features.
The AD5232 digital potentiometer provides a non‑volatile, dual‑channel variable resistor with selectable terminal resistances of 10 kΩ, 50 kΩ or 100 kΩ. It features full monotonic operation, push‑button increment/decrement compatibility, and a 4‑wire SPI‑compatible serial interface for programming and readback.
The device includes 14 bytes of user EEMEM for constant storage, a 100‑year data‑retention guarantee, and an endurance of 100 k cycles. It operates from a single 3 V–5 V supply or dual ±2.5 V supplies, and is offered in a thin TSSOP‑16 package suitable for industrial temperature ranges.
| Resolution | 8 bits (256 positions) |
|---|---|
| Differential Nonlinearity (DNL) | -1 LSB to +1 LSB |
| Integral Nonlinearity (INL) | ±0.4 % FS |
| User EEMEM Memory | 14 bytes |
| Data Retention | 100 years (typical at 55 °C) |
| Endurance | 100 k cycles |
It provides 14 bytes of user EEMEM non‑volatile memory for constant storage.
The EEMEM save operation takes approximately 25 ms, after which the RDY pin goes high.
The RDY pin signals completion of the EEMEM save.