The ADN2850 is a digital resistor from Analog Devices. It features dual channels, 1024-bit resolution, 25 kΩ and 250 kΩ selectable resistance values, low temperature drift, and more.
The ADN2850 is a dual‑channel, non‑volatile memory digital resistor offering 1024‑position resolution and low temperature coefficient. It replaces mechanical rheostats with solid‑state reliability and includes an SPI‑compatible serial interface, programmable EEMEM, and current‑monitoring functions.
The document contains detailed electrical characteristics, timing diagrams, absolute maximum ratings, pin configuration, and application notes such as sensor calibration, programmable filters, and optical transmitter calibration. Package options include 16‑lead LFCSP and TSSOP, and the device operates from –40 °C to +85 °C.
| Resolution | 1024 positions per channel |
|---|---|
| Nominal Resistance | 25 kΩ, 250 kΩ |
| Temperature Coefficient | 35 ppm/°C |
| Supply Voltage | 2.7 V‑5.5 V single or ±2.5 V dual |
| Programming Cycles | 1 million cycles |
| Data Retention | 100 years (typical) |
| Current Sink Range | 0.0001 mA to 10 mA |
Each channel provides a 1024‑position resolution.
The device supports up to one million programming cycles.
It operates from 2.7 V to 5.5 V on a single supply or from ±2.5 V on a dual supply.
The temperature coefficient is 35 ppm per degree Celsius.