Single Channel, 32-Position, Up/Down, ±8 % Resistor Tolerance, Nonvolatile Digital Potentiometer

The AD5115 provides a nonvolatile solution for 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.

The new low wiper resistance feature minimizes the wiper resistance in the extremes of the resistor array to only 45 Ω typical.

A simple 3-wire up/down interface allows manual switching or high speed digital control with clock rates up to 50 MHz.

The AD5115 is available in a 2 mm × 2 mm LFCSP package. The parts are guaranteed to operate over the extended industrial temperature range of −40°C to +125°C.

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

* Nominal resistor tolerance error: ±8% maximum

* Wiper current: ±6 mA

* Rheostat mode temperature coefficient: 35 ppm/°C

* Low power consumption: 2.5 μA max @ 2.7 V and 125°C

* Wide bandwidth: 4 MHz (5 kΩ option)

* Power-on EEPROM refresh time < 50 μs