MAX5471 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers

19-3067; Rev 0; 10/03
32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
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 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.
Applications
Mechanical Potentiometer Replacement
Liquid-Crystal-Display (LCD) Screen Adjustment
Audio Volume Control
Programmable Filters
Features
o Wiper Position Stored in Nonvolatile Memory and
Recalled Upon Power-Up
o Tiny SOT23 Package
o 35ppm/°C End-to-End Resistance Temperature
Coefficient
o 5ppm/°C Ratiometric Temperature Coefficient
o 32 Tap Positions
o Voltage-Divider or Variable-Resistor
Potentiometer Configuration
o 50kΩ and 100kΩ End-to-End Resistance Values
o 1µA (max) Static Supply Current
o 2.7V to 5.25V Single-Supply Operation
o 200,000 Wiper Store Cycles
o 50-Year Wiper Data Retention
PART
MAX5471EZT-T
MAX5472EZT-T
MAX5474EKA-T
MAX5475EKA-T
Ordering Information
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
8 SOT23-8
Pin Configurations
TOP VIEW
CS 1
6 VDD
CS 1
8L
GND 2
5H
V_DD 2
7W
U/D 3
MAX5471
MAX5472
SOT23-6
4 INC GND 3
U/D 4
6H
MAX5474
MAX5475
SOT23-8
5 INC
PART
MAX5471EZT
MAX5472EZT
MAX5474EKA
MAX5475EKA
Selector Guide
END-TO-END
RESISTANCE (kΩ)
50
100
50
100
TOP MARK
ABQN
ABQM
AEIZ
AEIY
________________________________________________________________ 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.