GENERAL DESCRIPTION

The AD5162 provides a compact 3 mm × 4.9 mm packaged solution for dual, 256-position adjustment applications. This device performs the same electronic adjustment function as a 3-terminal mechanical potentiometer. Available in four end-toend resistance values (2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ), this low temperature coefficient device is ideal for high accuracy and stability-variable resistance adjustments. The wiper settings are controllable through an SPI digital interface. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the RDAC latch.1

FEATURES

2-channel, 256-position potentiometer

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

Computer software replaces microcontroller in factory

programming 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

Qualified for automotive applications

APPLICATIONS

Systems calibrations

Electronics level settings

Mechanical trimmers replacement in new designs

Permanent factory PCB setting

Transducer adjustment of pressure, temperature, position,

chemical, and optical sensors

RF amplifier biasing

Automotive electronics adjustment

Gain control and offset adjustment