The X9258 integrates 4 digitally controlled potentiometers (XDCP™) on a monolithic CMOS integrated circuit. The digitally controlled potentiometer is implemented using 255 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. Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and 4 non-volatile Data Registers (DR0:DR3) 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 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.


  • Four potentiometers in one package
  • 256 resistor taps/potentiometer: 0.4% resolution
  • 2-wire serial interface
  • Wiper resistance, 40Ω typical @ V+ = 5V, V- = -5V
  • Four nonvolatile data registers for each potentiometer
  • Nonvolatile storage of wiper position
  • Standby current <5µA max (total package)
  • Power supplies
  • VCC = 2.7V to 5.5V
  • V+ = 2.7V to 5.5V
  • V- = -2.7V to -5.5V
  • 100kΩ, 50kΩ total potentiometer resistance
  • High reliability
  • Endurance: 100,000 data changes per bit per register
  • Register data retention: 100 years
  • 24 Ld SOIC, 24 Ld TSSOP
  • Dual supply version of X9259
  • Pb-free (RoHS compliant)




Type Title Date
Datasheet PDF 795 KB
Manual - Development Tools PDF 1.40 MB
End Of Life Notice PDF 1.17 MB
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 121 KB
Product Change Notice PDF 120 KB
Product Change Notice PDF 161 KB
Application Note PDF 281 KB
Application Note PDF 750 KB
Application Note PDF 715 KB
Application Note PDF 534 KB
Application Note PDF 467 KB
Application Note PDF 393 KB
Application Note PDF 280 KB
Application Note PDF 324 KB
Application Note PDF 280 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
Other PDF 315 KB
Application Note PDF 503 KB
Application Note PDF 287 KB
27 items

Design & Development

Software & Tools

Software Downloads

Type Title Date
End Of Life Notice PDF 1.17 MB
Library EXE 2.56 MB
2 items