Single Volatile 32-Tap Digitally Controlled Potentiometer (XDCP™)

Product Status: Mass Production


The Intersil ISL90460 is a digitally controlled potentiometer (XDCP). Configured as a variable resistor, the device consists of a resistor array, wiper switches, a control section, and volatile memory. The wiper position is controlled by a 2- pin Up/Down interface.

The potentiometer is implemented by a resistor array composed of 31 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 and U/D inputs. The device can be used in a wide variety of applications including:
  • LCD contrast control
  • Parameter and bias adjustments
  • Industrial and automotive control
  • Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
  • Laser Diode driver biasing
  • Gain control and offset adjustment


  • Volatile Solid-State Potentiometer
  • 2-pin UP/DN Interface
  • DCP Terminal Voltage, 2.7V to 5.5V
  • Tempco 35ppm/°C Typical
  • 32 Wiper Tap Points
  • Low Power CMOS
  • Active current 25µA max.
  • Supply current 0.3µA
  • Available RTOTAL Values = 10kΩ, 50kΩ, 100kΩ
  • Temp Range -40°C to +85°C
  • Packages
  • 5 Ld SC-70, SOT-23
  • Pb-Free Plus Anneal Available (RoHS Compliant)


 Block Diagram


Basic Information
Production Status
Mass Production
Resistance Options (kΩ)
10, 50, 100
Temperature Range
-40 to +85

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