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MAX5474EKAMAXN/a505avai32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers
MAX5471EZT-T |MAX5471EZTTMAXIMN/a8002avai32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers
MAX5471EZT-T |MAX5471EZTTMAXIM原厂N/a7869avai32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers
MAX5474EKA-T |MAX5474EKATMAXICN/a2500avai32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers


MAX5471EZT-T ,32-Tap, Nonvolatile, Linear-Taper Digital PotentiometersFeaturesThe MAX5471/MAX5472/MAX5474/MAX5475 linear- Wiper Position Stored in Nonvolatile Memory an ..
MAX5471EZT-T ,32-Tap, Nonvolatile, Linear-Taper Digital PotentiometersELECTRICAL CHARACTERISTICS(V = +2.7V to +5.25V, V = V , V = GND, T = -40°C to +85°C, unless otherwi ..
MAX5474EKA ,32-Tap, Nonvolatile, Linear-Taper Digital PotentiometersApplicationsMechanical Potentiometer ReplacementOrdering InformationLiquid-Crystal-Display (LCD) Sc ..
MAX5474EKA-T ,32-Tap, Nonvolatile, Linear-Taper Digital PotentiometersMAX5471/MAX5472/MAX5474/MAX547519-3067; Rev 0; 10/0332-Tap, Nonvolatile, Linear-Taper DigitalPotent ..
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MAXQ610A-2524+ ,16-Bit Microcontroller with Infrared ModuleApplications 0.2µA (typ), 2.0µA (max) in Stop ModeT = +25°C, Power-Fail Monitor DisabledARemote Con ..


MAX5471EZT-T-MAX5474EKA-MAX5474EKA-T
32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers
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
Wiper Position Stored in Nonvolatile Memory and
Recalled Upon Power-Up
Tiny SOT23 Package35ppm/°C End-to-End Resistance Temperature
Coefficient
5ppm/°C Ratiometric Temperature Coefficient32 Tap PositionsVoltage-Divider or Variable-Resistor
Potentiometer Configuration
50kΩand 100kΩEnd-to-End Resistance Values1µA (max) Static Supply Current2.7V to 5.25V Single-Supply Operation200,000 Wiper Store Cycles50-Year Wiper Data Retention
MAX5471/MAX5472/MAX5474/MAX5475
32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
Ordering Information

19-3067; Rev 0; 10/03
MAX5471/MAX5472/MAX5474/MAX5475
32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VDD= +2.7V to +5.25V, VH= VDD, VL= GND, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VDD= +5.0V, TA
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VDDto GND...........................................................-0.3V to +6.0V
All Other
Pins to GND.........-0.3V to the lower of (VDD+ 0.3V) or +6.0V
Maximum Continuous Current into H, L, and W
MAX5471/MAX5474.....................................................±1.3mA
MAX5472/MAX5475.....................................................±0.6mA
Continuous Power Dissipation (TA= +70°C)
6-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
8-Pin SOT23 (derate 8.9mW/°C above +70°C)............714mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
MAX5471/MAX5472/MAX5474/MAX5475
32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
Note 1:
All devices are production tested at TA= +25°C and are guaranteed by design and characterization for -40°C < TA< +85°C.
Note 2:
The DNL and INL are measured with the potentiometer configured as a variable resistor. For the 3-terminal potentiometers
(MAX5474/MAX5475), H is unconnected and L = GND. At VDD= 5.25V, W is driven with a source current of 80µA for the
50kΩconfiguration, and 40µA for the 100kΩconfiguration. At VDD= 2.7V, the wiper terminal is driven with a source current
of 40µA for the 50kΩconfiguration, and 20µA for the 100kΩconfiguration.
Note 3:
The DNL and INL are measured with the potentiometer configured as a voltage-divider with H = VDDand L = GND
(MAX5474/MAX5475 only). The wiper terminal is unloaded.
Note 4:
The wiper resistance is the worst value measured by injecting the currents given in Note 2 into W with L = GND. = (VW- VH) / IW.
Note 5:
The device draws higher supply current when digital inputs are driven with voltages between 0.3V x VDDand 0.7 x VDD.
Drive the digital inputs as close as possible to VDDor GND. (See the Typical Operating Characteristicsfor the Supply
Current vs. Digital Input Voltage graph.)
Note 6:
Wiper at midscale with a 10pF load.
Note 7:
Digital timing is guaranteed by design and characterization, and is not production tested.
Note 8:
Wiper settling time is the worst-case 0% to 50% rise time measured between consecutive wiper positions. H = VDD, L =
GND, and the wiper terminal is unloaded and measured with a 10pF oscilloscope probe (see the Typical Operating
Characteristicsfor the Tap-to-Tap Switching Transient).
Note 9:
Digital inputs CS, U/D, and INCare connected to GND or VDD. See the Typical Operating Characteristicsfor the Static
Supply Current vs. Temperature graph.
ELECTRICAL CHARACTERISTICS (continued)

(VDD= +2.7V to +5.25V, VH= VDD, VL= GND, TA= -40°C to +85°C, unless otherwise noted. Typical values are at VDD= +5.0V, TA
= +25°C, unless otherwise noted.) (Note 1)
MAX5471/MAX5472/MAX5474/MAX5475
32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
Typical Operating Characteristics

(VDD= 5.0V, TA= +25°C, unless otherwise noted.)
MAX5471/MAX5472/MAX5474/MAX5475
32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
WIPER TRANSIENT AT POWER-ON
(MAX5475)

MAX5471 toc11
1.0µs/div
VDD
5V/div
1V/div
WIPER RESPONSE vs. FREQUENCY

MAX5471toc12
FREQUENCY (kHz)
WIPER RESPONSE (dB)
RESISTANCE DNL vs. TAP POSITION
(MAX5471)
MAX5471 toc13
TAP POSITION
RESISTANCE DNL2015105
RESISTANCE INL vs. TAP POSITION
(MAX5471)
MAX5471 toc14
TAP POSITION
RESISTANCE INL2015105
RESISTANCE DNL vs. TAP POSITION
(MAX5472)
MAX5471 toc15
TAP POSITION
RESISTANCE DNL2015105
RESISTANCE INL vs. TAP POSITION
(MAX5472)
MAX5471 toc16
TAP POSITION
RESISTANCE INL2015105
RESISTANCE DNL vs. TAP POSITION
(MAX5474)
MAX5471 toc17
TAP POSITION
RESISTANCE DNL2015105
RESISTANCE INL vs. TAP POSITION
(MAX5474)
MAX5471 toc18
TAP POSITION
RESISTANCE INL2015105
Typical Operating Characteristics (continued)
(VDD= 5.0V, TA= +25°C, unless otherwise noted.)
MAX5471/MAX5472/MAX5474/MAX5475
32-Tap, Nonvolatile, Linear-Taper Digital
Potentiometers in SOT23
Pin Descriptionypical Operating Characteristics (continued)

(VDD= 5.0V, TA= +25°C, unless otherwise noted.)
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