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The Intersil X93155 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 31 resistive elements and a wiper switching network. 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 during a subsequent power-up operation. The device is connected as a two-terminal variable resistor and can be used in a wide variety of applications including:

Key Features

• Solid-state potentiometer
• Up/Down interface
• 32 wiper tap points per potentiometer
  • Wiper position stored in nonvolatile memory and recalled on power-up
• 31 resistive elements per potentiometer
  • Temperature compensated
  • Maximum resistance tolerance ±25%
  • Terminal voltage, 0 to VCC
• Low power CMOS
  • VCC = 5V ±10%
  • Active current, 200µA typ.
  • Standby current, 2.0µA max
• High reliability
  • Endurance 200,000 data changes per bit
  • Register data retention, 100 years
• RTOTAL value = 50kΩ
• Packages
  • 8 Ld MSOP
• Pb-free available (RoHS compliant) VCC