Analog Products

Overview

The Intersil ISL95310 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 an Up/Down interface. The potentiometer is implemented by a resistor array composed of 127 resistive elements and a wiper switching network. Between each element and at either end are tap points accessible to the wiper terminal. The wiper of each potentiometer has an associated volatile Wiper Counter Register (WR) and a non-volatile Initial Value Register (IVR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper on the resistor array through the switches. At power-up, the device recalls the contents of the default data registers to the corresponding WR. 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 or as a two-terminal variable resistor in a wide variety of applications including:

  • LCD contrast control
  • Parameter and bias adjustments
  • Mechanical potentiometer replacement
  • Industrial and automotive control
ISL95310 Functional Diagram
ISL95310 Functional Diagram
  • Non-Volatile Solid-State Potentiometer
  • Up/Down Interface With Chip Select Enable
  • DCP Terminal Voltage, 0 to +13.2V
  • 128 Wiper Tap Points - 0.8% Resolution
  • Wiper position stored in nonvolatile memory and recalled on power-up
  • 127 Resistive Elements
  • Temperature compensated
  • Low Wiper resistance 70Ω typical @ 3.3V
  • Low Power CMOS
  • Standby current, 2µA at VCC = +3.6V
  • High Reliability
  • Endurance, 200,000 data changes per bit
  • Register data retention 50 years @ T ≤ 75°C
  • RTOTAL Values = 10kΩ, 50kΩ
  • 10 Lead MSOP Package
  • Pb-free (RoHS compliant)

Documentation

Title
Type 		Date
ISL95310 Datasheet
PDF 519 KB 		Datasheet
Digital Potentiometer (DCP) Evaluation USB Kit Manual
PDF 1.40 MB 		Manual - Development Tools
PA14042 - Minimum Line Quantity Change
PDF 363 KB 		Product Advisory
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP)
PDF 98 KB 		Product Change Notice
AN1425: Get Precision Performance from a Digitally Controlled Potentiometer (DCP)
PDF 281 KB 		Application Note
AN133: Putting Analog On The Bus
PDF 534 KB 		Application Note
AN1157: Power Supply and DC to DC Converter Control using Intersil Digitally Controlled Potentiometers (XDCPs)
PDF 280 KB 		Application Note
AN1173: DC/DC Module Trim with Digital Potentiometers
PDF 513 KB 		Application Note
AN1699: Digital Control Potentiometers Offer Hidden Benefits for Many Designs
PDF 251 KB 		Application Note
TB458: Converting a Fixed PWM to an Adjustable PWM
PDF 315 KB 		Other
AN9675: A Tutorial in Coherent and Windowed Sampling with A/D Converters
PDF 503 KB 		Application Note
AN9705: A Theoretical View of Coherent Sampling
PDF 287 KB 		Application Note
12 items

Design & Development

Software Downloads

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

ECAD Models

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    ISL95310UIU10Z
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    Samples Available
    		 MSOP Tube 5120 Get Samples,
    ISL95310UIU10Z-TK
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    		MSOP Reel 6000
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