GENERAL DESCRIPTION
The AD5291 and AD5292 are single-channel, 256-/1024-position digital potentiometers1 that combine industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package. These devices are capable of operating across a wide voltage range, supporting both dual supply operation at ±10.5 V to ±16.5 V and single supply operation at +21 V to +33 V, while ensuring less than 1% end-to-end resistor tolerance error and offering 20-time programmable (20-TP) memory.
The guaranteed industry leading low resistor tolerance error feature simplifies open-loop applications as well as precision calibration and tolerance matching applications.

FEATURES
   Single-channel, 256-/1024-position resolution
   20 kΩ, 50 kΩ, and 100 kΩ nominal resistance
   Maximum ±1% nominal resistor tolerance error (resistor
      performance mode)
   20-times programmable wiper memory
   Rheostat mode temperature coefficient: 35 ppm/°C
   Voltage divider temperature coefficient: 5 ppm/°C
   +9 V to +33 V single-supply operation
   ±9 V to ±16.5 V dual-supply operation
   SPI-compatible serial interface
   Wiper setting readback
   Power-on refreshed from 20-TP memory

APPLICATIONS
   Mechanical potentiometer replacement
   Instrumentation: gain and offset adjustment
   Programmable voltage-to-current conversion
   Programmable filters, delays, and time constants
   Programmable power supply
   Low resolution DAC replacement
   Sensor calibration