GENERAL DESCRIPTION

The AD5110/AD5112/AD5114 provide a nonvolatile solution for 128-/64-/32-position adjustment applications, offering guaranteed low resistor tolerance errors of ±8% and up to ±6 mA current density in the A, B, and W pins. The low resistor tolerance, low nominal temperature coefficient and high bandwidth simplify open-loop applications, as well as tolerance matching applications.

FEATURES

  Single-channel, 128-/64-/32-position resolution

  5 kΩ, 10 kΩ, 80 kΩ nominal resistance

  Maximum ±8% nominal resistor tolerance error

  Low wiper resistance

  ±6 mA maximum wiper current density

  Resistor tolerance stored in EEPROM (0.1% accuracy)

  Rheostat mode temperature coefficient: 35 ppm/°C

  Potentiometer mode temperature coefficient: 5 ppm/°C

  2.3 V to 5.5 V single-supply operation

  1.8 V to 5.5 V logic supply operation

  Power-on EEPROM refresh time < 50 μs

  I2C-compatible interface

  Wiper setting and EEPROM readback

  50-year typical data retention at 125°C

  1 million write cycles

  Wide operating temperature: −40°C to +125°C

  Thin, 2 mm × 2 mm × 0.55 mm 8-lead LFCSP package

APPLICATIONS

  Mechanical potentiometer replacement

  Portable electronics level adjustment

  Audio volume control

  Low resolution DAC

  LCD panel brightness and contrast control

  Programmable voltage to current conversion

  Programmable filters, delays, time constants

  Feedback resistor programmable power supply

  Sensor calibration