The AD5293 is a single-channel, 1,024-position digital potentiometer1 with less than 1% end-to-end Resistor Tolerance, SPI® compatible serial interface, Wiper setting readback, Mechanical potentiometer replacement, Instrumentation: gain, offset adjustment, Programmable voltage to current conversion, Programmable filters, delays, time constants, Programmable power supply, Low resolution DAC replacement, Sensor calibration.
The AD5293 digital potentiometer provides a single‑channel, 1024‑position resolution with selectable nominal resistances of 20 kΩ, 50 kΩ, and 100 kΩ. It operates from a single‑supply of +21 V to +30 V or a dual‑supply of +10.5 V to +15 V and offers a calibrated ±1 % resistor tolerance and low temperature coefficients (35 ppm/°C for rheostat mode, 5 ppm/°C for voltage‑divider mode).
The device includes a serial interface compatible with standard SPI, supports wiper setting read‑back, and provides extensive timing specifications, power‑up sequencing guidelines, and package information (14‑lead TSSOP). It is intended for applications such as mechanical potentiometer replacement, instrumentation gain/offset adjustment, programmable voltage‑to‑current conversion, and sensor calibration.
| Resolution | 10 bits |
|---|---|
| Number of Positions | 1024 |
| Nominal Resistor Tolerance | ±1 % |
| Rheostat Mode Temperature Coefficient | 35 ppm/°C |
| Voltage‑Divider Mode Temperature Coefficient | 5 ppm/°C |
| Single‑Supply Voltage Range | +21 V to +30 V |
| Dual‑Supply Voltage Range | +10.5 V to +15 V |
| Package | 14‑Lead TSSOP (RU‑14) |
The AD5293 can be powered from a single supply of +21 V to +30 V or from dual supplies of +10.5 V to +15 V.
The device offers 1024 discrete positions for the wiper.
The AD5293 has a calibrated ±1 % nominal resistor tolerance.
It is supplied in a 14‑lead TSSOP (RU‑14) package.