General Description

The MAX5417/MAX5418/MAX5419 nonvolatile, linear-

taper, digital potentiometers perform the function of a

mechanical potentiometer, but replace the mechanics

with a simple 2-wire digital interface, allowing communi-

cation with multiple devices. Each device performs the

same function as a discrete potentiometer or variable

resistor and has 256 tap points.

The devices feature an internal, nonvolatile EEPROM

used to store the wiper position for initialization during

face allows communication at data rates up to 400kbps,

minimizing board space and reducing interconnection

complexity in many applications. Each device is available

with one of four factory-preset addresses (see the

Selector Guide) and features an address input for a total

of eight unique address combinations.

The MAX5417/MAX5418/MAX5419 provide three nomi-

nal resistance values: 50k

Ω (MAX5417), 100kΩ

(MAX5418), or 200k

Ω (MAX5419). The nominal resistor

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

only 5ppm/°C ratiometric. This makes the devices ideal

for applications requiring a low-temperature-coefficient

variable resistor, such as low-drift, programmable gain-

amplifier circuit configurations.

The MAX5417/MAX5418/MAX5419 are available in a

3mm x 3mm 8-pin TDFN package, and 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) Contrast Control

Features

♦ Power-On Recall of Wiper Position from

Nonvolatile Memory

♦ Tiny 3mm x 3mm 8-Pin TDFN Package

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

Coefficient

♦ 5ppm/°C Ratiometric Temperature Coefficient

♦ 50kΩ/100kΩ/200kΩ Resistor Values

♦ 500nA (typ) Static Supply Current

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

♦ 256 Tap Positions

♦ ±0.5 LSB DNL in Voltage-Divider Mode

♦ ±0.5 LSB INL in Voltage-Divider Mode

Digital Potentiometers

________________________________________________________________ Maxim Integrated Products

1

GND

SDA

SCL

8-BIT

SHIFT

REGISTER

8-BIT

LATCH

8-BIT

NV

MEMORY

INTERFACE

8

8

256

W

L

256-

POSITION

DECODER

H

POR

MAX5417

MAX5418

MAX5419

Ordering Information/Selector Guide

Functional Diagram

19-3185; Rev 2; 8/04

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.

Pin Configuration appears at end of data sheet.

Inc. or one of its sublicensed Associated Companies, conveys

*Future product—contact factory for availability.

**Exposed pad.

PART

TEMP RANGE

I

R (k

Ω)PIN-PACKAGE

TOP MARK

MAX5417LETA

-40°C to +85°C

50

8 TDFN-EP**

AIB

MAX5417META*

-40°C to +85°C

50

8 TDFN-EP**

ALS

MAX5417NETA*

-40°C to +85°C

50

8 TDFN-EP**

ALT

MAX5417PETA*

-40°C to +85°C

50

8 TDFN-EP**

ALU

MAX5418LETA

-40°C to +85°C

100

8 TDFN-EP**

AIC

MAX5418META*

-40°C to +85°C

100

8 TDFN-EP**

ALV

MAX5418NETA*

-40°C to +85°C

100

8 TDFN-EP**

ALW

MAX5418PETA*

-40°C to +85°C

100

8 TDFN-EP**

ALX

MAX5419LETA

-40°C to +85°C

200

8 TDFN-EP**

AID

MAX5419META*

-40°C to +85°C

200

8 TDFN-EP**

ALY

MAX5419NETA*

-40°C to +85°C

200

8 TDFN-EP**

ALZ

MAX5419PETA*

-40°C to +85°C

200

8 TDFN-EP**

AMA