GENERAL DESCRIPTION：

The AD5243 and AD5248 provide a compact 3 mm × 4.9 mmpackaged solution for dual, 256-position adjustment applications.The AD5243 performs the same electronic adjustment functionas a 3-terminal mechanical potentiometer, and the AD5248performs the same adjustment function as a 2-terminal variableresistor. Available in four end-to-end resistance values (2.5 kΩ,10 kΩ, 50 kΩ, and 100 kΩ), these low temperature coefficientdevices are ideal for high accuracy and stability-variableresistance adjustments. The wiper settings are controllablethrough the I2C-compatible digital interface. The AD5248 hasextra package address decode pins, AD0 and AD1, allowingmultiple parts to share the same I2C, 2-wire bus on a PCB. Theresistance between the wiper and either endpoint of the fixedresistor varies linearly with respect to the digital code transferred into the RDAC latch. (The terms digital potentiometer, VR,and RDAC are used interchangeably.)

FEATURES：

2-channel, 256-position potentiometers

End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ

Compact 10-lead MSOP (3 mm × 4.9 mm) package

Fast settling time: tS = 5 µs typical on power-up

Full read/write of wiper register

Power-on preset to midscale

Extra package address decode pins:AD0 and AD1 (AD5248 only)

Computer software replaces microcontroller in factoryprogramming applications

Single supply: 2.7 V to 5.5 V

Low temperature coefficient: 35 ppm/°C

Low power: IDD = 6 µA maximum

Wide operating temperature: −40°C to +125°C

Evaluation board available

APPLICATIONS：

Systems calibrationsElectronics level settings

Mechanical trimmers replacement in new designs

Permanent factory printed circuit board (PCB) setting

Transducer adjustment of pressure, temperature, position,chemical, and optical sensors

RF amplifier biasing

Gain control and offset adjustment