Product Details
●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
●1 The terms digital potentiometer, VR, and RDAC are used interchangeably.
●### Features and Benefits
● 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
