Single-Channel, 1024-Position,

1% R-Tolerance Digital Potentiometer

AD5293

Rev. D

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FEATURES

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

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

FUNCTIONAL BLOCK DIAGRAM

A

W

B

RDAC

REGISTER

10

SERIAL

INTERFACE

SYNC

SCLK

DIN

POWER-ON

RESET

SDO

EXT_CAP

GND

AD5293

RESET

RDY

Figure 1.

GENERAL DESCRIPTION

The AD5293 is a single-channel, 1024-position digital

potentiometer1 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 open-

loop 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.

interchangeably.