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The Intersil X93255 is a dual digitally controlled potentiometer (XDCP). The device consists of two resistor arrays, wiper switches, a control section, and nonvolatile memory. The wiper positions are controlled by individual Up/Down interfaces.

A potentiometer is implemented by a resistor array composed of 31 resistive elements and a wiper switching network. The position of each wiper element is controlled by a set of independent 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.

Each potentiometer is connected as a two-terminal variable resistor and can be used in a wide variety of applications including:

Key Features

• Dual solid-state potentiometers
• Independent Up/Down interfaces
• 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, 4µA max
• High reliability
  • Endurance 200,000 data changes per bit
  • Register data retention, 100 years
• RTOTAL value = 50kΩ
• Packages
  • 14-lead TSSOP