AD5263 Datasheet

• 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
• Rheostat mode temperature coefficient 30 ppm/°C
• Voltage divider temperature coefficient 5 ppm/°C
• Wide operating temperature range –40°C to +125°C
• 10 V to 15 V single supply; ±5 V dual supply

• 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 

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.