The X9C102, X9C103, X9C104, X9C503 are Intersil's digitally controlled (XDCP) potentiometers. The device consists of a resistor array, wiper switches, a control section, and non-volatile memory. The wiper position is controlled by a three-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 non-volatile memory and then be recalled upon a subsequent power-up operation. The device can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications ranging from control to signal processing to parameter adjustment.


  • Solid-State Potentiometer
  • Three-Wire Serial Interface
  • 100 Wiper Tap Points
  • Wiper Position Stored in Non-volatile Memory and Recalled on Power-up
  • 99 Resistive Elements
  • Temperature Compensated
  • End-to-End Resistance, ±20%
  • Terminal Voltages, ±5V
  • Low Power CMOS
  • VCC = 5V
  • Active Current, 3mA max.
  • Standby Current, 750µA max.
  • High Reliability
  • Endurance, 100,000 Data Changes per Bit
  • Register Data Retention, 100 years
  • X9C102 = 1kΩ
  • X9C103 = 10kΩ
  • X9C503 = 50kΩ
  • X9C104 = 100kΩ
  • Packages
  • 8 Ld SOIC
  • 8 Ld PDIP
  • Pb-Free Available (RoHS Compliant)




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