DATASHEET
X9110 FN8158
Rev 5.00
October 28, 2016 Dual Supply/Low Power/1024-Tap/SPI Bus, Single Digitally-Controlled (XDCPв„ў)
Potentiometer
The X9110 integrates 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 SPI bus interface. The
potentiometer has associated with it a volatile Wiper Counter
Register (WCR) and four nonvolatile 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 resistor in a wide variety of
applications including control, parameter adjustments, and
signal processing. Related Literature Features 1024 resistor taps – 10-bit resolution SPI serial interface for write, read, and transfer operations of
the potentiometer Wiper resistance, 40О©пЂ typical at 5V Four nonvolatile data registers Nonvolatile storage of multiple wiper positions Power-on recall, loads saved wiper position on power-up Standby current <5ВµA maximum System VCC: 2.7V to 5.5V operation Analog V+/V-: -5V to +5V 100kО©пЂ end-to-end resistance 100 year data retention Endurance: 100,000 data changes per bit per register 14 Ld TSSOP For a full list of related documents, visit our website …