Quad, 15 V, 256-Position Digital Potentiometer with Pin-Selectable SPI/IC

The AD5263 is the industry’s first quad-channel, 256-position, digital potentiometer1 with a selectable digital interface. This device performs the same electronic adjustment function as mechanical potentiometers or variable resistors, with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.

Each channel of the AD5263 offers a completely programmable value of resistance between the A terminal and the wiper or between the B terminal and the wiper. The fixed A-to-B terminal resistance of 20 kΩ, 50 kΩ, or 200 kΩ has a nominal temperature coefficient of ±30 ppm/°C and a ±1% channel-to-channel matching tolerance. Another key feature of this part is the ability to operate from +4.5 V to +15 V, or at ±5 V.

Wiper position programming presets to midscale upon power-on. Once powered, the VR wiper position is programmed by either the 3-wire SPI or 2-wire I2C-compatible interface. In the I2C mode, additional programmable logic outputs enable users to drive digital loads, logic gates, and analog switches in their systems.

The AD5263 is available in a narrow body, 24-lead TSSOP. All parts are guaranteed to operate over the automotive temperature range of –40°C to +125°C.

For single- or dual-channel applications, refer to the AD5260 / AD5280 or AD5262 / AD5282 data sheets.

APPLICATIONS:

* Mechanical potentiometer replacement

* Optical network adjustment

* Instrumentation: gain, offset adjustment

* Stereo channel audio level control

* Automotive electronics adjustment

* Programmable power supply

* Programmable filters, delays, time constants

* Line impedance matching

* Low resolution DAC/trimmer replacement

* Base station power amp biasing

* Sensor calibration

* 256-position, 4-channel

* End-to-end resistance 20 kΩ, 50 kΩ, 200 kΩ

* Pin-selectable SPI®- or I2C®-compatible interface

* Power-on preset to midscale

* Two package address decode pins AD0 and AD1