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MAX5128

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

Overview

Status

Active: In Production.

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.

Data Sheet

Download	Rev 2	(PDF, 316kB)
Email

An evaluation kit is available: MAX5128EVCMAXQU+, MAX5128EVKIT+

NOTE: This product uses the following:
MAX5128 EVKIT Software

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

Applications/Uses

Backlight Adjustment
Bias Setting for Radios
Fiber-Module Bias Setting
LED Bias Adjustment
Portable Consumer Electronics
Power-Supply Modules
V_COM Adjustment for LCD Panels

Key Specifications:

Digital Potentiometers

Part Number

Taper

POTs

Control Interface

Wiper Memory

Steps

R_END-TO-END
(kΩ)

Res. Tol.
(%)

Temp. Coeff.
(ppm/°C)

Wiper Resistance
(Ω)

I_CC @5V
(µA)

Budgetary
Price

typ

max

See Notes

MAX5128

Linear

Up/Down

Non-Volatile

128

600

1.5

$0.68 @1k

See All Digital Potentiometers (128)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Functional Diagram

More Information

Topmark Coding	MAX5128
New Product Press Release	[ 2006-02-03 ]

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Information Index

Overview		Design Resources		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Technical Documents Evaluation Kits Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-3929 Rev 2; 2007-06-08
This page last modified: 2007-08-08