Analog Products

Overview

The X9251 integrates four digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the SPI bus interface. Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and four nonvolatile Data Registers that can be directly written to and read by the user. The content of the WCR controls the position of the wiper. At power-up, the device recalls the content of the default Data Registers of each DCP (DR00, DR10, DR20, and DR30) to the corresponding WCR. The XDCP can be used as a three terminal potentiometer or as a two terminal variable resistor in a wide variety of applications including control, parameter adjustments, and signal processing.

X9251 Functional Diagram
X9251 Functional Diagram
  • Four potentiometers in one package
  • 256 resistor taps–0.4% resolution
  • SPI serial interface for write, read, and transfer operations of the potentiometer
  • Wiper resistance: 100Ω typical at VCC = 5V
  • 4 Nonvolatile data registers for each potentiometer
  • Nonvolatile storage of multiple wiper positions
  • Standby current <5µA max
  • VCC: 2.7V to 5.5V operation
  • 50kΩ version of total resistance
  • 100 year data retention
  • Single supply version of X9250
  • Endurance: 100,000 data changes per bit per register
  • 24 Ld SOIC, 24 Ld TSSOP
  • Low power CMOS
  • Pb-free (RoHS compliant)

Documentation

Type Title Date
Datasheet
X9251 Datasheet
PDF 983 KB
Manual - Development Tools
Digital Potentiometer (DCP) Evaluation USB Kit Manual
PDF 1.40 MB
Price Increase Notice
PIN19006 - Price Increase for the Listed Renesas Electronics America Products
PDF 257 KB
Price Increase Notice
PIN17006 - Q1 2017 Price Increase
PDF 227 KB
Product Advisory
PA14042 - Minimum Line Quantity Change
PDF 363 KB
Product Change Notice
PCN13065 - Fab site change, C5 Technology transfer to Palm Bay from XFAB and Yamaha for the listed products (Monitor and DCPs)
PDF 237 KB
Product Change Notice
PCN11113A - Manufacturing Site Change for Assembly of the Listed Intersil TSSOP Packaged Products - Carsem-M (CAM) - Ipoh, Malaysia
PDF 121 KB
Product Change Notice
PCN11113 - Manufacturing Site Change for Assembly of the Listed Intersil TSSOP Packaged Products - Carsem-M (CAM) - Ipoh, Malaysia
PDF 120 KB
Application Note
AN1425: Get Precision Performance from a Digitally Controlled Potentiometer (DCP)
PDF 281 KB
Application Note
AN139: Designing Power Supplies Using Intersil's XDCP Mixed Signal Products
PDF 750 KB
Application Note
AN133: Putting Analog On The Bus
PDF 534 KB
Application Note
AN1149: Application of Intersil Digitally Controlled Potentiometers (XDCP) as Hybrid Analog/Digital Feedback System Control Elements
PDF 467 KB
Application Note
AN1157: Power Supply and DC to DC Converter Control using Intersil Digitally Controlled Potentiometers (XDCPs)
PDF 280 KB
Application Note
AN124: A Primer on Digitally-Controlled Potentiometers
PDF 324 KB
Application Note
AN1155: Shaft Encoder Drives Multiple Intersil Digitally Controlled Potentiometers (XDCPs)
PDF 239 KB
Application Note
AN1156: Tone, Balance, and Volume Control using a Quad XDCP
PDF 209 KB
Application Note
AN1145: A Compendium of Application Circuits for Intersil's Digitally-Controlled (XDCP) Potentiometers
PDF 384 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
Other
TB458: Converting a Fixed PWM to an Adjustable PWM
PDF 315 KB
Application Note
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
22 items

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
    MOQ
    Buy / Sample
    Part Number
    X9251UV24IZ
    play_circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 TSSOP Tube 248 Get Samples,
    X9251UV24IZ-2.7
    play_circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 TSSOP Tube 248 Get Samples,
    X9251UV24IZ-2.7T1
    play_circleActive
    memory
    spa
    view_in_ar
    		TSSOP Reel 2500
    X9251UV24Z
    play_circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 TSSOP Tube 248 Get Samples,
    X9251UV24Z-2.7
    play_circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 TSSOP Tube 248 Get Samples,
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    Renesas Samples

    Select an orderable part number:

    Orderable Part ID Sample
    X9251UV24IZ
    Availability
    Add to request
    X9251UV24IZ-2.7
    Availability
    Add to request
    X9251UV24Z
    Availability
    Add to request
    X9251UV24Z-2.7
    Availability
    Add to request