Product Summary

The MAX5471EZT-T is a linear-taper digital potentiometer. It functions 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 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. 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.

Parametrics

MAX5471EZT-T absolute maximum ratings: (1)VDD to GND :-0.3V to +6.0V ; (2)Pins to GND :-0.3V to the lower of (VDD + 0.3V) or +6.0V; (3)Maximum Continuous Current into H, L, and W MAX5471:±1.3mA; (4)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; (5)Operating Temperature Range :-40 °C to +85 °C; (6)Junction Temperature :+150°C; (7)Storage Temperature Range :-60°C to +150°C; (8)Lead Temperature (soldering, 10s):+300°C.

Features

MAX5471EZT-T features: (1)Wiper Position Stored in Nonvolatile Memory and Recalled Upon Power-Up; (2)Tiny SOT23 Package; (3)35ppm/°C End-to-End Resistance Temperature Coefficient; (4)5ppm/°C Ratiometric Temperature Coefficient; (5)32 Tap Positions; (6)Voltage-Divider or Variable-Resistor Potentiometer Configuration; (7)50kΩ and 100kΩ End-to-End Resistance Values; (8)1μA (max) Static Supply Current; (9)2.7V to 5.25V Single-Supply Operation; (10)200,000 Wiper Store Cycles; (11)50-Year Wiper Data Retention.

Diagrams

MAX5471EZT-T block diagram

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