General Description
The MAX5422/MAX5423/MAX5424 nonvolatile, linear-taper, 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.

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

Applications
   Mechanical Potentiometer Replacement
   Low-Drift Programmable Gain Amplifiers
   Audio Volume Control
   Liquid-Crystal Display (LCD) Contrast Control
   Low-Drift Programmable Filters