X9221A PDF Datasheet


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Description

This is Dual Digitally Controlled Potentiometer. ® X9221A 64 Taps, 2-Wire Serial Bus Data Sheet August 30, 2006 FN8163.2 Dual Digitally Controlled Potentiometer (XDCP™) FEATURES Two XDCPs in one package 2-wire serial interface Register oriented format, 8 registers total Directly write wiper position Read wiper position Store as many as four positions per pot Instruction format Quick transfer of register contents to resistor array Direct write cell Endurance 100,000 writes per bit per register Resistor array values 2kΩ, 10kΩ, 50kΩ Resolution: 64 taps each pot 20 Ld plastic DIP and 20 Ld SOIC packages Pb-free plus anneal available (RoHS compliant) BLOCK DIAGRAM DESCRIPTION The X9221A integrates two digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated microcircuit. The digitally controlled potentiometer is implemented using 63 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 i.