General Description

The MAX5432–MAX5435 nonvolatile, linear-taper, digi-

tal potentiometers perform the function of a mechanical

potentiometer, but replace the mechanics with a simple

2-wire serial interface. Each device performs the same

function as a discrete potentiometer or a variable resis-

tor and has 32 tap points.

The MAX5432–MAX5435 feature an internal, nonvolatile,

electrically erasable programmable read-only memory

(EEPROM) that returns the wiper to its previously stored

serial interface allows communication at data rates up to

400kbps, minimizing board space and reducing inter-

connection complexity. Each device is available with

Selector Guide).

Use the MAX5432–MAX5435 in applications requiring

digitally controlled resistors. Two resistance values are

available (50k

Ω and 100kΩ) in a voltage-divider or vari-

able resistor configuration. The nominal resistor temper-

ature coefficient is 35ppm/°C end-to-end, and only

5ppm/°C ratiometric, making the devices ideal for

applications requiring a low-temperature-coefficient

variable resistor such as low-drift, programmable-gain

amplifier circuit configurations.

The MAX5432/MAX5433 are available in a 3mm x 3mm 8-

pin TDFN package and the MAX5434/MAX5435 are avail-

able in a 6-pin thin SOT23 package. The MAX5432–

MAX5435 are specified over the extended (-40°C to

+85°C) temperature range.

Applications

Mechanical Potentiometer Replacement

Low-Drift Programmable-Gain Amplifiers

Volume Control

Liquid-Crystal Display (LCD) Screen Adjustment

Features

♦ Tiny 3mm x 3mm 8-Pin TDFN and 6-Pin Thin

SOT23 Packages

♦ Power-On Recall of Wiper Position from

Nonvolatile Memory

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

Coefficient

♦ 5ppm/°C Ratiometric Temperature Coefficient

♦ 50kΩ/100kΩ Resistor Values

♦ 500nA (typ) Static Supply Current

♦ +2.7V to +5.25V Single-Supply Operation

♦ 32 Tap Positions

♦ ±0.15 LSB INL (typ), ±0.15 LSB DNL (typ)

Potentiometers

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-3511; Rev 1; 12/04

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.

PART

TEMP RANGE

PIN-PACKAGE

MAX5432LETA

-40

°C to +85°C

8 TDFN-EP**

MAX5432META*

-40

°C to +85°C

8 TDFN-EP**

MAX5433LETA

-40

°C to +85°C

8 TDFN-EP**

MAX5433META*

-40

°C to +85°C

8 TDFN-EP**

MAX5434LEZT-T

-40

°C to +85°C

6 Thin SOT23-6

MAX5434MEZT-T*

-40

°C to +85°C

6 Thin SOT23-6

MAX5434NEZT-T*

-40

°C to +85°C

6 Thin SOT23-6

MAX5434PEZT-T*

-40

°C to +85°C

6 Thin SOT23-6

MAX5435LEZT-T

-40

°C to +85°C

6 Thin SOT23-6

MAX5435MEZT-T*

-40

°C to +85°C

6 Thin SOT23-6

MAX5435NEZT-T*

-40

°C to +85°C

6 Thin SOT23-6

MAX5435PEZT-T*

-40

°C to +85°C

6 Thin SOT23-6

Inc., or one of its sublicensed Associated Companies, conveys

Selector Guide appears at end of data sheet.

*Future product—contact factory for availability.

**EP = Exposed pad.

TDFN

TOP VIEW

GND

SDA

SCL

16

L

5W

SOT23

2

34

MAX5434

MAX5435

A0

SCL

1

2

8

7

W

L

SDA

GND

H

3

4

6

5

MAX5432

MAX5433

Pin Configurations