DATASHEET
X9118 FN8161
Rev 5.00
April 9, 2014 Dual Supply/Low Power/1024-Tap/2-Wire Bus Single Digitally-Controlled
(XDCPв„ў) Potentiometer
The X9118 is a single digitally controlled potentiometer
(XDCP) on a monolithic CMOS integrated circuit.
The digital controlled potentiometer is implemented using
1023 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. The contents
of the WCR controls the position of the wiper on the resistor
array though the switches. Power-up recalls the contents of
the default data register (DR0) to the WCR.
The XDCP can be used as a three-terminal potentiometer or
as a two terminal variable resistors in a wide variety of
applications including control, parameter adjustments, and
signal processing. Features 1024 resistor taps – 10-bit resolution 2-wire serial interface for write, read and transfer
operations of the potentiometer Wiper resistance, 40пЃ— typical @ 5V Four non-volatile data registers for each potentiometer Non-volatile storage of multiple wiper positions Power on recall: Loads saved wiper position on power-up Standby current < 15ВµA Max System VCC: 2.7V to 5.5V operation Analog V+/V-: -5V to +5V 100kпЃ— end-to-end resistance Endurance: 100,000 data changes per bit per register 100 years data retention 14 Ld TSSOP Low power CMOS Pb-free (RoHS compliant) Ordering Information …