Overview

The Intersil X9318 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.

X9318 Functional Diagram
X9318 Functional Diagram
  • Solid-state potentiometer
  • 3-wire serial interface
  • Terminal voltage, 0 to +8V
  • 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 = 5V
  • Active current, 3mA max.
  • Standby current, 1mA max.
  • High reliability
  • Endurance, 100,000 data changes per bit
  • Register data retention, 100 years
  • RTOTAL value = 10kΩ
  • Packages
  • 8 Ld SOIC and DIP
  • Pb-free plus anneal available (RoHS compliant)

Applications

  • LCD bias control
  • DC bias adjustment
  • Gain and offset trim
  • Laser diode bias control
  • Voltage regulator output control

Documentation

Design & Development

Software Downloads
Type Title Date
Library
DCP Evaluation Board Software v6.03
EXE 2.56 MB
1 item

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    Buy / Sample
    Part Number
    X9318WS8IZ
    circleActive
    memory
    spa
    view_in_ar
    Samples Available
    Buy Now
    		SOICN Tube 1 3.225 Get Samples,
    X9318WS8IZT1
    circleActive
    memory
    spa
    view_in_ar
    		SOICN Reel 1
    X9318WS8Z
    circleActive
    memory
    spa
    view_in_ar
    Samples Available
    Buy Now
    		SOICN Tube 1 3.337 Get Samples,
    X9318WS8ZT1
    circleActive
    memory
    spa
    view_in_ar
    		SOICN Reel 1
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product