General Description

The MAX5471/MAX5472/MAX5474/MAX5475 linear-

taper digital potentiometers function as mechanical

potentiometers, but replace the mechanics with a sim-

ple 3-wire up/down digital interface. These digital

potentiometers feature nonvolatile memory (EEPROM)

to return the wiper to its previously stored position upon

power-up.

The MAX5471/MAX5472 are 2-terminal, variable resistors

in 6-pin SOT23 packages. The MAX5474/MAX5475 are

3-terminal potentiometers in 8-pin SOT23 packages.

The MAX5471/MAX5474 have an end-to-end resistance

of 50k

Ω, and the MAX5472/MAX5475 have an end-

to-end resistance of 100k

Ω. All of these devices have

32 wiper positions, a low ratiometric temperature coeffi-

cient (5ppm/°C), and all operate from a single +2.7V to

+5.25V supply. Each device is guaranteed over the

extended -40

°C to +85°C temperature range.

Applications

Mechanical Potentiometer Replacement

Liquid-Crystal-Display (LCD) Screen Adjustment

Audio Volume Control

Programmable Filters

Features

♦ Wiper Position Stored in Nonvolatile Memory and

Recalled Upon Power-Up

♦ Tiny SOT23 Package

♦ 35ppm/°C End-to-End Resistance Temperature

Coefficient

♦ 5ppm/°C Ratiometric Temperature Coefficient

♦ 32 Tap Positions

♦ Voltage-Divider or Variable-Resistor

Potentiometer Configuration

♦ 50kΩ and 100kΩ End-to-End Resistance Values

♦ 1µA (max) Static Supply Current

♦ 2.7V to 5.25V Single-Supply Operation

♦ 200,000 Wiper Store Cycles

♦ 50-Year Wiper Data Retention

32-Tap, Nonvolatile, Linear-Taper Digital

Potentiometers in SOT23

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-3067; Rev 1; 2/06

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.

EVALUATION

KIT

AVAILABLE

PART

TEMP

RANGE

PIN-PACKAGE

PKG

CODE

MAX5471EZT-T-40

°C to +85°C 6 Thin SOT23-6

Z6-1

MAX5472EZT-T-40

°C to +85°C 6 Thin SOT23-6

Z6-1

MAX5474EKA-T-40

°C to +85°C 8 SOT23-8

K8S-3

MAX5475EKA-T-40

°C to +85°C 8 SOT23-8

K8S-3

TOP VIEW

L

GND

H

INC

W

1

GND

SOT23-6

SOT23-8

2

3

6

5

4

CS

U/D

U/D

MAX5471

MAX5472

1

H

2

3

8

7

6

CS

MAX5474

MAX5475

4

5

INC

Pin Configurations

PART

END-TO-END

RESISTANCE (k

Ω)

TOP MARK

MAX5471EZT

50

ABQN

MAX5472EZT

100

ABQM

MAX5474EKA

50

AEIZ

MAX5475EKA

100

AEIY

Selector Guide