Datasheet > MAX5128

MAX5128

更新时间： 2024-11-03 05:00:11

品牌	Logo	应用领域
美信 - MAXIM		电位器
页数	文件大小	规格书
13页	729K
描述
128-Tap, Nonvolatile, Linear-Taper Digital Potentiometer in 2mm x 2mm uDFN Package

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MAX5128 数据手册

19-3929; Rev 0; 1/06

128-Tap, Nonvolatile, Linear-Taper Digital

Potentiometer in 2mm x 2mm µDFN Package

General Description

Features

The MAX5128 nonvolatile, single, linear-taper, digital

potentiometer performs the function of a mechanical

potentiometer, but replaces the mechanics with a sim-

ple 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) stand-

by supply current, making this device ideal for portable

applications. The MAX5128 operates from a +2.7V to

+5.25V power supply. An integrated nonvolatile memo-

ry recalls the programmed wiper position of the digital

potentiometer. A simple 2-wire up/down interface pro-

grams the wiper position. The digital potentiometer pro-

vides a low 5ppm/°C ratiometric temperature coefficient

and is specified over the extended -40°C to +85°C tem-

perature range.

♦ 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

Applications

Ordering Information

Adjustment for LCD Panels

COM

TEMP

RANGE

PIN-

TOP

PKG

PART

Backlight Adjustment

PACKAGE MARK CODE

LED Bias Adjustment

MAX5128ELA -40°C to +85°C 8 µDFN

AAF L822-1

Power-Supply Modules

Fiber-Module Bias Setting

Bias Setting for Radios

Portable Consumer Electronics

Functional Diagram

POR

7-BIT NV MEMORY

128-POSITION

DECODER

128

TAPS

GND

SERIAL

INTERFACE

MAX5128

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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