Single Channel, 1024-Position, 1% R-Tolerance Digital Potentiometer

The AD5293 is a single-channel, 1024-position digital potentiometer (in this data sheet, the terms digital potentiometer and RDAC are used interchangeably) with a <1% end-to-end resistor tolerance error. The AD5293 performs the same electronic adjustment function as a mechanical potentiometer with enhanced resolution, solid state reliability, and superior low temperature coefficient performance. This device is capable of operating at high voltages and supporting both dual-supply operation at ±10.5 V to ±15 V and single-supply operation at 21 V to 30 V.

The AD5293 offers guaranteed industry-leading low resistor tolerance errors of ±1% with a nominal temperature coefficient of 35 ppm/°C. The low resistor tolerance feature simplifies openloop applications as well as precision calibration and tolerance matching applications.

The AD5293 is available in a compact 14-lead TSSOP package. The part is guaranteed to operate over the extended industrial temperature range of −40°C to +105°C.

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 replacements

* Sensor calibration

* Single-channel, 1024-position resolution

* 20 kΩ, 50 kΩ, and 100 kΩ nominal resistance

* Calibrated 1% nominal resistor tolerance (resistor performance mode)

* Rheostat mode temperature coefficient: 35 ppm/°C

* Voltage divider temperature coefficient: 5 ppm/°C

* Single-supply operation: 9 V to 33 V

* Dual-supply operation: ±9 V to ±16.5 V

* SPI-compatible serial interface

* Wiper setting readback