Description

The MAX5128 nonvolatile, single, linear-taper, digitalpotentiometer performs the function of a mechanicalpotentiometer, but replaces the mechanics with a simple2-wire digital interface. The MAX5128 performs thesame function as a discrete potentiometer or variableresistor and features 128 taps and 22kΩ end-to-endresistance. The MAX5128 also features an ultra-small,2mm x 2mm µDFN package and low 0.5µA (typ) standbysupply current, making this device ideal for portableapplications. The MAX5128 operates from a +2.7V to+5.25V power supply. An integrated nonvolatile memoryrecalls the programmed wiper position of the digitalpotentiometer. A simple 2-wire up/down interface programsthe wiper position. The digital potentiometer providesa low 5ppm/°C ratiometric temperature coefficientand is specified over the extended -40°C to +85°C temperaturerange.ApplicationsBacklight AdjustmentBias Setting for RadiosFiber-Module Bias SettingLED Bias AdjustmentPortable Consumer ElectronicsPower-Supply ModulesVCOM Adjustment for LCD Panels