AD5220 is a single-channel 128-position digitally controlled variable resistor (VR) device. It is optimized for instrument and test equipment push-button applications and features 10 kΩ, 50 kΩ and 100 kΩ resistance values to meet different application requirements.
The AD5220 provides a single‑channel, 128‑position digitally controlled variable resistor that replaces mechanical potentiometers in instrumentation and test equipment. It offers selectable resistance values of 10 kΩ, 50 kΩ, or 100 kΩ and operates over an extended temperature range of –40 °C to +85 °C.
The device is available in 8‑lead plastic DIP, SO‑8 surface‑mount, and thin uSOIC packages. It uses a three‑wire SPI‑compatible interface (CS, CLK, U/D) and includes ESD protection on all digital pins. Detailed specifications, absolute maximum ratings, and typical performance curves are provided in the datasheet.
| Resolution | 7 bits |
|---|---|
| Number of Positions | 128 |
| Nominal Resistor Tolerance | ±30 % |
The AD5220 is guaranteed to operate from –40 °C to +85 °C.
It provides 128 discrete positions.
The device is offered with nominal resistances of 10 kΩ, 50 kΩ, or 100 kΩ.
It is available in 8‑lead plastic DIP, SO‑8 surface‑mount, and thin uSOIC packages.