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MAX5128：128-Tap, Nonvolatile, Linear-Taper Digital Potentiometer in 2mm x 2mm µDFN Package

The MAX5128 nonvolatile, single, linear-taper, digital potentiometer performs the function of a mechanical potentiometer, but replaces the mechanics with a simple 2-wire digital interface. The MAX5128 performs the same function as a discrete potentiometer or variable resistor and features 128 taps and 22kΩ end-to-end resistance. The MAX5128 also features an ultra-small, 2mm x 2mm µDFN package and low 0.5µA (typ) standby supply current, making this device ideal for portable applications. The MAX5128 operates from a +2.7V to +5.25V power supply. An integrated nonvolatile memory recalls the programmed wiper position of the digital potentiometer. A simple 2-wire up/down interface programs the wiper position. The digital potentiometer provides a low 5ppm/°C ratiometric temperature coefficient and is specified over the extended -40°C to +85°C temperature range.

Key Features Ultra-Small, 2mm x 2mm, 8-Pin µDFN Package Power-On Recall of Wiper Position from Nonvolatile Memory 22kΩ End-to-End Resistance 128 Tap Positions 5ppm/°C Ratiometric Temperature Coefficient 1.5µA (max) Standby Supply Current +2.7V to +5.25V Single Supply Operation 80,000 Wiper Store Cycles 50-Year Wiper Data Retention

MAX5128: Functional Diagram Applications/Uses Backlight Adjustment Bias Setting for Radios Fiber-Module Bias Setting LED Bias Adjustment Portable Consumer Electronics Power-Supply Modules VCOM Adjustment for LCD Panels

DataSheet

Parametrics

Design kits & evaluation modules

• MAX5128EVCMAXQU+
• MAX5128EVKIT+

Quality and Environmental Data

• MAX5128.pdf

Ordering Information