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General Description

The MAX5471/MAX5472/MAX5474/MAX5475 linear taper digital potentiometers function as mechanical potentiometers, but replace the mechanics with a simple 3-wire up/down digital interface. These digital potentiometers feature nonvolatile memory (EEPROM) to return the wiper to its previously stored position upon power-up.

The MAX5471/MAX5472 are 2-terminal, variable resistors in 6-pin SOT23 packages. The MAX5474/MAX5475 are 3-terminal potentiometers in 8-pin SOT23 packages.

Features

? Wiper Position Stored in Nonvolatile Memory and Recalled Upon Power-Up

? Tiny SOT23 Package

? 35ppm/°C End-to-End Resistance Temperature Coefficient

? 5ppm/°C Ratiometric Temperature Coefficient

? 32 Tap Positions

? Voltage-Divider or Variable-Resistor Potentiometer Configuration

? 50k? and 100k? End-to-End Resistance Values

? 1μA (max) Static Supply Current

? 2.7V to 5.25V Single-Supply Operation

? 200,000 Wiper Store Cycles

? 50-Year Wiper Data Retention

Applications

? Mechanical Potentiometer Replacement

? Liquid-Crystal-Display (LCD) Screen Adjustment

? Audio Volume Control

? Programmable Filters

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