MAX5128ELA+T Digital Potentiometer ICs 128 Tap Nonvolatile Linear
Taper Digital A1221LLHLT-T DS28EC20+ Semiconductors
General Description
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
Applications
VCOM Adjustment for LCD Panels Backlight Adjustment LED Bias
Adjustment Power-Supply Modules Fiber-Module Bias Setting Bias
Setting for Radios Portable Consumer Electronics
Features
♦ Ultra-Small, 2mm x 2mm, 8-Pin µDFN Package
♦ Power-On Recall of Wiper Position from Nonvolatile Memory
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