The AD5161 is a 256-position SPI/I2C selectable digital potentiometer with 256 positions and end-to-end resistance. It is packaged in a compact MSOP-10 package and features a pin selectable SPI/I2C compatible interface and an extra package address decode pin. This product is suitable as a replacement for mechanical potentiometers and can be used for transducer adjustment of sensors, RF amplifier biasing, automotive electronics adjustment, and more.
The AD5161 provides a compact MSOP‑10 packaged solution for 256‑position adjustment applications. It offers a selectable SPI or I²C digital interface, low temperature coefficient, and can be daisy‑chained for multiple devices on the same bus.
Key features include a single‑supply range of 2.7 V to 5.5 V, 8‑bit resolution, and operation over –40 °C to +125 °C, making it suitable for portable and automotive electronics, sensor adjustment, and RF amplifier biasing.
| Number of positions | 256 |
|---|---|
| End‑to‑end resistance options | 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ |
| Package | MSOP‑10 (3 mm × 4.9 mm) |
| Supply voltage range | 2.7 V to 5.5 V |
| Temperature coefficient | 45 ppm/°C |
| Operating temperature range | –40 °C to +125 °C |
| Resolution | 8 bits (256 steps) |
| Wiper resistance | 50 Ω – 120 Ω |
The AD5161 provides 256 discrete positions.
It operates from a single supply of 2.7 V to 5.5 V.
The device has a temperature coefficient of 45 ppm/°C.
The AD5161 offers 8‑bit resolution, giving 256 steps.