MAX5478EUD+T

The MAX5478EUD+T is a dual, 256-tap, non-volatile, I2C-interface, digital potentiometer in 14 pin TSSOP package. It is a non-volatile, dual, linear-taper, digital potentiometer perform the function of a mechanical potentiometer, but replace the mechanics with a simple 2-wire digital interface. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points. The device features an internal, non-volatile EEPROM used to store the wiper position for initialization during power-up. A write-protect feature prevents accidental overwrites of the EEPROM. The fast-mode I2C-compatible serial interface allows communication at data rates up to 400Kbps, minimizing board space and reducing interconnection complexity in many applications. Three address inputs allow a total of eight unique address combinations. The low temperature coefficient makes the devices ideal for applications requiring a low temperature coefficient variable resistor.

• Supply voltage range from 2.7V to 5.25V
• End-to-end resistance is 50Kohm
• Power-on recall of wiper position from non-volatile memory
• EEPROM write protection
• 70ppm/°C end-to-end resistance temperature coefficient, 10ppm/°C ratiometric temperature coefficient
• Static supply current is 1μA (max)
• ±0.5LSB DNL in voltage divider mode and ±1 LSB INL in voltage divider mode
• Operating temperature range from -40°C to +85°C

Note

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party