GENERAL DESCRIPTION
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.
FEATURES
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
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
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