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ISL22426 - Dual Digitally Controlled Potentiometer

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Overview

® ISL22426 Dual Digitally Controlled Potentiometer (XDCP™) Data Sheet July 17, 2006 FN6180.0 Low Noise, Low Power, SPI® Bus, 128 Taps The ISL22426 integrates two digitally controlled potentiometers (DCP) and non-volatile memory on a monolithic CMOS integrated circuit.

The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches.

The position of the wipers are controlled by the user through the SPI serial interface.

Key Features

  • Two potentiometers in one package.
  • 128 resistor taps.
  • SPI serial interface.
  • Non-volatile storage of wiper position.
  • Wiper resistance: 70Ω typical @ 3.3V.
  • Shutdown mode.
  • Shutdown current 5µA max.
  • Power supply: 2.7V to 5.5V.
  • 50kΩ or 10kΩ total resistance.
  • High reliability - Endurance: 1,000,000 data changes per bit per register - Register data retention: 50 years @ T.

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