AD5162BRMZ100-RL7 Integrated Circuits (ICs)

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1. DESCRIPTION

The AD5162BRMZ100-RL7 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 Operating from a 2.7 V to 5.5 V power supply and consuming less than 6 µA allows the AD5162BRMZ100-RL7 to be used in portable battery operated applications. For applications that program the AD5162BRMZ100-RL7 at the factory, Analog Devices offers device programming software running on Windows® NT/2000/XP operating systems. This software effectively replaces the need for external SPI controllers, which in turn enhances the time to market of systems. 

2. FEATURES

    1. 2-channel, 256-position potentiometer

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

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

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

    5. Full read/write of wiper register

    6. Power-on preset to midscale

    7. Computer software replaces microcontroller in factory programming applications

    8. Single supply: 2.7 V to 5.5 V

    9. Low temperature coefficient: 35 ppm/°C

  10. Low power: IDD = 6µA maximum

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

  12. Evaluation board available

  13. Qualified for automotive applications

3. APPLICATIONS

    1. Systems calibrations

    2. Electronics level settings

    3. Mechanical trimmers replacement in new designs

    4. Permanent factory PCB setting

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

    6. RF amplifier biasing

    7. Automotive electronics adjustment

    8. Gain control and offset adjustment