资 源 简 介
The ISL22313 integrates a single digitally controlledpotenTIometer (DCP), control logic and non-volaTIle memoryon a monolithic CMOS integrated circuit.The digitally controlled potenTIometer is implemented with acombinaTIon of resistor elements and CMOS switches. Theposition of the wipers are controlled by the user through theI2C bus interface. The potentiometer has an associatedvolatile Wiper Register (WR) and a non-volatile Initial ValueRegister (IVR) that can be directly written to and read by theuser. The contents of the WR control the position of thewiper. At power up the device recalls the contents of theDCP’s IVR to the WR.The ISL22313 also has 14 general purpose non-volatileregisters that can be used as storage of lookup table formultiple wiper position or any other valuable information.The ISL22313 features a dual supply, that is beneficial forapplications requiring a bipolar range for DCP terminalsbetween V- and VCC.The DCP can be used as a three-terminal potentiometer oras a two-terminal variable resistor in a wide variety ofapplications including control, parameter adjustments, andsignal processing.
