General Description

The MAX5527/MAX5528/MAX5529 linear-taper digital

potentiometers perform the same function as mechanical

potentiometers, replacing the mechanics with a simple

2-wire up/down digital interface. These digital poten-

tiometers provide an optional one-time programmable

feature that sets the power-on reset position of the wiper.

Once the wiper position is programmed, the 2-wire inter-

face can be disabled to prevent unwanted adjustment.

The MAX5527/MAX5528/MAX5529 provide an end-to-end

resistance of 100k

Ω, 50kΩ, and 10kΩ, respectively. The

devices feature low temperature coefficients of 35ppm/

°C

end-to-end and 5ppm/

°C ratiometric. All devices offer 64

wiper positions and operate from a single +2.7V to +5.5V

supply. An ultra-low, 0.25µA (typ) standby supply current

saves power in battery-operated applications.

The MAX5527/MAX5528/MAX5529 are available in

3mm x 3mm, 8-pin TDFN and 5mm x 3mm, 8-pin

-40

°C to +105°C temperature range.

Applications

Products Using One-Time Factory Calibration

Mechanical Potentiometer Replacements

Features

♦ Wiper Position Stored After One-Time Fuse

Programming

♦ 64 Tap Positions

♦ Wiper Position Programmed Through Simple

2-Wire Up/Down Interface

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

♦ 5ppm/°°C Ratiometric Temperature Coefficient

♦ Ultra-Low 1.5μA (max) Static Supply Current

♦ +2.7V to +5.5V Single-Supply Operation

♦ 10kΩ, 50kΩ, and 100kΩ End-to-End Resistances

♦ Tiny, 3mm x 3mm, 8-Pin TDFN and 5mm x 3mm,

8-Pin µMAX Packages

One-Time Programmable, Linear-Taper Digital

Potentiometers

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

19-3665; Rev 1; 7/09

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

EVALUATION

KIT

AVAILABLE

PART

PIN-PACKAGE

RESISTANCE

(k

Ω)

TOP

MARK

MAX5527GTA+

8 TDFN-EP*

100

AOG

MAX5527GUA+

8 µMAX

100

—

MAX5528GTA+

8 TDFN-EP*

50

AOH

MAX5528GUA+

8 µMAX

50

—

MAX5529GTA+

8 TDFN-EP*

10

AOI

MAX5529GUA+

8 µMAX

10

—

+

Denotes a lead(Pb)-free/RoHs-compliant package.

*

EP = Exposed pad.

Note: All devices are specified over the -40°C to +85°C operat-

ing temperature range.

1

H

CS

GND

μMAX

TDFN*

TOP VIEW

2

3

4

L

U/D

PV

8

7

6

5

W

*EXPOSED PADDLE. CONNECT TO GND.

MAX5527

MAX5528

MAX5529

1

23

4

87

6

5

MAX5527

MAX5528

MAX5529

Pin Configurations

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Functional Diagram

MAX5527

MAX5528

MAX5529

64-

POSITION

DECODER

UP/DOWN

COUNTER

ONE-TIME

PROGRAM

BLOCK

GND

CS

U/D

PV

L

H

W