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MAX5422 - Digital Potentiometers

Description

The MAX5422/MAX5423/MAX5424 nonvolatile, lineartaper, digital potentiometers perform the function of a mechanical potentiometer, but replace the mechanics with a simple 3-wire SPI™-compatible digital interface.

Features

  • o Wiper Position Stored in Nonvolatile Memory (EEPROM) and Recalled Upon Power-Up or Interface Command o 3mm x 3mm x 0.8mm TDFN Package o 35ppm/°C End-to-End Resistance Temperature Coefficient o 5ppm/°C Ratiometric Temperature Coefficient o 50kΩ, 100kΩ, and 200kΩ Resistor Values o 5MHz SPI-Compatible Serial Interface o 500nA (typ) Static Supply Current o Single-Supply Operation: +2.7V to +5.25V o 256 Tap Positions o ±0.5 LSB DNL in Voltage-Divider Mode o ±0.5 LSB INL in Voltage-Divider Mode SPI.

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www.DataSheet.co.kr 19-3371; Rev 0; 7/04 256-Tap, Nonvolatile, SPI-Interface, Digital Potentiometers General Description The MAX5422/MAX5423/MAX5424 nonvolatile, lineartaper, digital potentiometers perform the function of a mechanical potentiometer, but replace the mechanics with a simple 3-wire SPI™-compatible digital interface. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points. The devices feature an internal, nonvolatile EEPROM used to store the wiper position for initialization during power-up. The 3-wire SPI-compatible serial interface allows communication at data rates up to 5MHz, minimizing board space and reducing interconnection complexity in many applications.
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