MAX5472

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. 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. 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 Applications Mechanical Potentiomet...