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Digital potentiometers with on-chip EEPROM

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MAXIM Integrated Products, represented by Arrow , has introduced the MAX5471, MAX5472, MAX5474 and MAX5475, a family of 32-tap nonvolatile digital potentiometers with on-chip EEPROM packaged in SOT23.

The on-chip memory enables the devices to operate like mechanical potentiometers by storing the wiper position prior to power down. This results in a size reduction compared with mechanical pots.

The MAX547x also offer ratiometric and end-to-end temperature coefficients as low as 5ppm/°C and 35ppm/°C.

MAX547x series potentiometers save power by requiring less than 1μA in standby and by operating from a 2.7V to 5.5V single supply.

End-to-end resistances of 50kΩ and 100kΩ are available. The devices come in two wiper configurations: voltage divider or variable resistor. An up/down three-wire serial interface makes these new digital pots easy to operate.

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