The Intersil X9318 is a digitally controlled potentiometer (XDCP). The device consists of a resistor array, wiper switches, a control section, and nonvolatile memory. The wiper position is controlled by a 3-wire interface. The potentiometer is implemented by a resistor array composed of 99 resistive elements and a wiper switching network. Between each element and at either end are tap points accessible to the wiper terminal. The position of the wiper element is controlled by the CS, U/D, and INC inputs. The position of the wiper can be stored in nonvolatile memory and then be recalled upon a subsequent power-up operation. The device can be used as a three-terminal potentiometer for voltage control or as a two-terminal variable resistor for current control in a wide variety of applications.


  • Solid-state potentiometer
  • 3-wire serial interface
  • Terminal voltage, 0 to +8V
  • 100 wiper tap points
  • Wiper position stored in nonvolatile memory and recalled on power-up
  • 99 resistive elements
  • Temperature compensated
  • End to end resistance range ± 20%
  • Low power CMOS
  • VCC = 5V
  • Active current, 3mA max.
  • Standby current, 1mA max.
  • High reliability
  • Endurance, 100,000 data changes per bit
  • Register data retention, 100 years
  • RTOTAL value = 10kΩ
  • Packages
  • 8 Ld SOIC and DIP
  • Pb-free plus anneal available (RoHS compliant)




  • LCD bias control
  • DC bias adjustment
  • Gain and offset trim
  • Laser diode bias control
  • Voltage regulator output control


Type Title Date
Datasheet PDF 465 KB
Manual - Development Tools PDF 1.40 MB
End Of Life Notice PDF 229 KB
Price Increase Notice PDF 257 KB
Price Increase Notice PDF 227 KB
Product Advisory PDF 363 KB
Product Change Notice PDF 237 KB
Product Change Notice PDF 204 KB
Product Change Notice PDF 152 KB
Application Note PDF 281 KB
Application Note PDF 750 KB
Application Note PDF 534 KB
Application Note PDF 467 KB
Application Note PDF 280 KB
Application Note PDF 324 KB
Application Note PDF 239 KB
Application Note PDF 209 KB
Application Note PDF 384 KB
Application Note PDF 513 KB
Application Note PDF 251 KB
Application Note PDF 259 KB
Other PDF 315 KB
Application Note PDF 503 KB
Application Note PDF 287 KB
24 items

Design & Development

Software & Tools

Software Downloads

Type Title Date
End Of Life Notice PDF 229 KB
Library EXE 2.56 MB
2 items