X9221A potentiometer equivalent, dual digitally potentiometer.
* Two XDCPs in one package
* 2-wire serial interface
* Register oriented format, 8 registers total
—Directly write wiper position —Read wiper position —Store .
including control, parameter adjustments, and signal processing.
BLOCK DIAGRAM
VCC VSS
SCL SDA
A0 A1 A2 A3
Interface.
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 point.
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