AD5220 is a single-channel, 128-position digitally controlled variable resistor (VR) device produced by Analog Devices, Inc. This device is optimized for instrument and test equipment push-button applications. It is available in 10kΩ, 50kΩ and 100kΩ resistance values and consumes very low power.
The AD5220 provides a single‑channel, 128‑position digitally controlled variable resistor designed to replace mechanical potentiometers in instrument and test equipment push‑button applications. It offers selectable end‑to‑end resistance values of 10 kΩ, 50 kΩ, or 100 kΩ and operates over an industrial temperature range of –40 °C to +85 °C.
Key features include a three‑wire serial interface (CLK, CS, UP/DOWN), low supply current (up to 40 mA), 800 ppm/°C temperature coefficient, and availability in DIP, SO‑8, and mSOIC packages. The device includes ESD protection on its digital inputs and supports both rheostat and potentiometer divider modes.
| Number of positions | 128 |
|---|---|
| Supply voltage (VDD) | 2.7 V to 5.5 V |
| Temperature coefficient | 800 ppm/°C |
| Operating temperature range | –40 °C to +85 °C |
The AD5220 provides 128 digitally controlled positions.
It operates with a supply voltage (VDD) from 2.7 V to 5.5 V.
It is guaranteed to operate from –40 °C to +85 °C.