The document describes Analog Devices' ADN2850 nonvolatile memory, which features dual, 1024-position programmable resistors. The product has a low temperature coefficient, nonvolatile memory, linear/incremental and logarithmic/tapered increment/decrement capabilities, and is suitable for applications such as SONET, SDH, ATM, Gig.
The Analog Devices ADN2850 is a dual-channel, digitally controlled programmable resistor device featuring 1024 positions of resolution. It performs the same electronic adjustment function as a mechanical rheostat but offers enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.
Key features include nonvolatile memory that maintains wiper settings even after power loss, permanent write-protection options, and the ability to read back wiper settings. The device supports both linear and logarithmic taper increments/decrements via a standard SPI-compatible serial interface. It is available in 5 mm x 5 mm LFCSP and thin TSSOP packages.
| Resolution | 1024 positions |
|---|---|
| Full-Scale Resistance (25 kΩ version) | 25 kΩ |
| Temperature Coefficient | 35 ppm/°C |
| Data Retention | 100 Years |
| Memory Endurance | 100 K Cycles |
| Supply Voltage (Single) | 3.0 V to 5.5 V |
| Package Types | LFCSP, TSSOP |
The device is suitable for SONET, SDH, ATM, Gigabit Ethernet, DWDM Laser Diode Driver Optical Supervisory Systems.
Yes, it features nonvolatile memory that maintains wiper settings and stores 26 bytes of user data.
All parts are guaranteed to operate over the extended industrial temperature range of —40°C to +85°C.