Click to expand full text
POSSIOBBLISSELOS9LU5E8BT1SE0T,PIITSRULODT9DEa5U8tPa1CR1STOhDeUetCT
X9279
Single Supply/Low Power/256-Tap/2-Wire Bus
September 23, 2009
FN8175.4
Single Digitally-Controlled (XDCP™) Potentiometer
The X9279 integrates a single digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit.
The digital controlled potentiometer is implemented using 255 resistive elements in a series array. Between each element are tap points connected to the wiper terminal through switches. The position of the wiper on the array is controlled by the user through the 2-Wire bus interface. The potentiometer has associated with it a volatile Wiper Counter Register (WCR) and a four non-volatile Data Registers that can be directly written to and read by the user.
X9279 Datasheet
