The AD5200 and AD5201 are programmable resistor devices, with 256 positions and 33 positions respectively, that can be digi- tally controlled through a 3-wire SPI serial interface. The terms programmable resistor, variable resistor (VR), and RDAC are commonly used interchangeably to refer to digital potentiometers. These devices perform the same electronic adjustment function as mechanical potentiometers, and offer additional features and performance.
The AD5200 (256‑position) and AD5201 (33‑position) are SPI‑compatible digital potentiometers that replace mechanical pots in instrumentation, voltage‑to‑current conversion, filtering and impedance matching applications. They feature a VR latch that retains the programmed resistance value during power‑down and support both single‑supply (2.7 V‑5.5 V) and dual‑supply operation.
The document provides detailed electrical characteristics, absolute maximum ratings, pin descriptions, ordering information, typical performance curves and a selection guide for related devices. It also includes mechanical dimensions for the SOIC‑10 package.
| Resolution (AD5200) | 8 bits |
|---|---|
| Resolution (AD5201) | 6 bits |
| Wiper Resistance | 50 Ω – 100 Ω |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Operating Temperature Range | -40 °C to +85 °C |
The AD5200 provides an 8‑bit resolution.
The AD5201 operates from a single supply of 2.7 V to 5.5 V, or dual‑supply with +2.7 V and –2.7 V.
Both devices are rated for an operating temperature range of –40 °C to +85 °C.