The X9401 integrates 4 digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated microcircuit. The digitally controlled potentiometer is implemented using 64 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. Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and 4 nonvolatile 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 through 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.


  • Quad - 4 Separate Pots, 64 Taps/Pot
  • Nonvolatile Storage of Wiper Position
  • Four Nonvolatile Data Registers for Each Pot
  • 16-bytes of EEPROM Memory
  • SPI Serial Interface
  • RTOTAL = 10kΩ
  • Wiper Resistance = 150Ω Typical
  • Standby Current < 3µA (Total Package)
  • Operating Current < 700µA max.
  • VCC = 2.7V to 5V
  • 24 Ld SOIC and 24 Ld TSSOP Package
  • 100 year Data Retention
  • Pb-Free Available (RoHS Compliant)




Type Title Date
Datasheet PDF 821 KB
Manual - Development Tools PDF 1.40 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 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
Other PDF 315 KB
Application Note PDF 503 KB
Application Note PDF 287 KB
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