64-Position OTP Digital Potentiometer AD5171 Rev. D is a low-cost OTP digital potentiometer with 64 positions, programmable via I2C-compatible digital interface.
The AD5171 is a 64‑position one‑time programmable (OTP) digital potentiometer from Analog Devices. It provides a set‑and‑forget resistance setting using fuse‑link technology, offering a low‑cost alternative to EEMEM and is suitable for automotive and general‑purpose applications. It features an I²C‑compatible two‑wire interface, an extra address pin for up to two devices, low power consumption, and operates from 2.7 V to 5.5 V.
The device is supplied in an 8‑lead SOT‑23 package and supports resistance values of 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ with a 6‑bit resolution. Detailed electrical, timing, and absolute‑maximum specifications are provided, along with pin descriptions, typical performance graphs, and an evaluation kit for factory programming.
| Positions | 64 |
|---|---|
| Operating voltage | 2.7 V to 5.5 V |
| Temperature range | ‑40 °C to +125 °C |
| Resolution | 6 bits |
| Supply current (typical) | 10 pA |
Up to two devices can be addressed using the extra address pin.
The OTP program time is 400 ms.