19-3067; Rev 0; 10/03
32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
General Description
Features
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.
ꢀ 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
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.
ꢀ Voltage-Divider or Variable-Resistor
The MAX5471/MAX5474 have an end-to-end resistance
of 50kΩ, and the MAX5472/MAX5475 have an end-
to-end resistance of 100kΩ. 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.
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
Applications
Mechanical Potentiometer Replacement
Liquid-Crystal-Display (LCD) Screen Adjustment
Audio Volume Control
Ordering Information
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
6 Thin SOT23-6
6 Thin SOT23-6
8 SOT23-8
MAX5471EZT-T
MAX5472EZT-T
MAX5474EKA-T
MAX5475EKA-T
Programmable Filters
8 SOT23-8
Pin Configurations
Selector Guide
END-TO-END
RESISTANCE (kΩ)
PART
TOP MARK
TOP VIEW
MAX5471EZT
MAX5472EZT
MAX5474EKA
MAX5475EKA
50
100
50
ABQN
ABQM
AEIZ
V
L
CS
1
2
3
6
5
4
CS
1
2
3
4
8
7
6
5
DD
100
AEIY
GND
V
H
DD
GND
U/D
W
H
INC
U/D
MAX5471
MAX5472
MAX5474
MAX5475
INC
SOT23-6
SOT23-8
________________________________________________________________ Maxim Integrated Products
1
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.