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MAX5471 - Digital Potentiometers

Description

The MAX5471/MAX5472/MAX5474/MAX5475 lineartaper digital potentiometers function as mechanical potentiometers, but replace the mechanics with a simple 3-wire up/down digital interface.

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 MAX5471/MAX5472/MAX5474/MAX5475 App.

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Full PDF Text Transcription

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19-3067; Rev 0; 10/03 www.DataSheet4U.com 32-Tap, Nonvolatile, Linear-Taper Digital Potentiometers in SOT23 General Description The MAX5471/MAX5472/MAX5474/MAX5475 lineartaper 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 50k Ω , and the MAX5472/MAX5475 have an endto-end resistance of 100kΩ.
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