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MAX5471, MAX5472, MAX5474, MAX5475
32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers in SOT23
Industry's First 32-Tap, Nonvolatile Digital Potentiometers in a SOT23 have Ultra-Low Temperature Drift
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Status
Active: In Production.
Description
The MAX5471/MAX5472/MAX5474/MAX5475 linear-taper digital potentiometers function as mechanical potentiometers, but replace the mechanics with a simple 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 coefficient (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.
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Data Sheet
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An evaluation kit is available: MAX5474EVKIT
Key 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
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Applications/Uses
- Audio Volume Control
- Liquid-Crystal Display (LCD) Screen Adjustment
- Mechanical Potentiometer Replacements
- Programmable Filters
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Key Specifications:
| Digital Potentiometers |
| Part Number |
Taper |
POTs |
Control Interface |
Wiper Memory |
Steps |
REND-TO-END
(kΩ) |
Temp. Coeff.
(ppm/°C) |
Wiper Resistance
(Ω) |
ICC @5V
(µA) |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| typ |
typ |
max |
max w/pins |
See Notes |
| MAX5471 |
Linear |
1 |
Up/Down |
Non-Volatile |
32 |
50 |
35 |
600 |
1 |
8.3 |
$0.53 @1k |
| MAX5472 |
100 |
8.3 |
$0.53 @1k |
| MAX5474 |
50 |
9 |
$0.57 @1k |
| MAX5475 |
100 |
9 |
$0.57 @1k |
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See All Digital Potentiometers (129)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Pin Configuration
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-3067
Rev 1;
2006-02-20
This page last modified: 2009-10-12
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