The X9317 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 Up/Down Interface
  • 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 = 2.7V to 5.5V, and 5V ±10%
  • Standby Current <5µA
  • High Reliability
  • Endurance, 100,000 Data Changes per Bit
  • Register Data Retention, 100 years
  • RTOTAL Values = 10kΩ, 50kΩ, 100kΩ
  • Packages
  • 8 Ld SOIC, TSSOP, and MSOP
  • Pb-Free (RoHS Compliant)




  • LCD Bias Control
  • DC Bias Adjustment
  • Gain and Offset Trim
  • Laser Diode Bias Control
  • Voltage Regulator Output Control


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Software & Tools

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