Rainbow Electronics MAX5475 - Manual

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 50k
Ω, and the MAX5472/MAX5475 have an end-
to-end resistance of 100k
Ω. 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
♦ 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
♦ Voltage-Divider or Variable-Resistor
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
MAX5471/MAX5472/MAX5474/MAX5475
32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-3067; Rev 0; 10/03
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
MAX5471EZT-T -40 °C to +85°C 6 Thin SOT23-6
MAX5472EZT-T -40 °C to +85°C 6 Thin SOT23-6
MAX5474EKA-T -40 °C to +85°C 8 SOT23-8
MAX5475EKA-T -40 °C to +85°C 8 SOT23-8
TOP VIEW
L
GND H
INC
W
1
GND
SOT23-6
SOT23-8
2
3
6
5
4
CS
U/D
U/D
MAX5471
MAX5472
1
V
DD
V DD
H 2
3
8
7
6
CS
MAX5474
MAX5475
4 5
INC
Pin Configurations
PART
END-TO-END
RESISTANCE (k Ω)
TOP MARK
MAX5471EZT 50 ABQN
MAX5472EZT 100 ABQM
MAX5474EKA 50 AEIZ
MAX5475EKA 100 AEIY
Selector Guide