ISL23511: Low Noise, Low Power, 32 Taps, Push Button Controlled Potentiometer

The Intersil ISL23511 is a three-terminal digitally-controlled potentiometer (XDCP) implemented by a resistor array composed of 31 resistive elements and a wiper switching network. The ISL23511 features a push button control, a shutdown mode, as well as an industry-leading µTQFN package.

The push button control has individual PU and PD inputs for adjusting the wiper. To eliminate redundancy the wiper position will automatically increment or decrement if one of these inputs is held longer than one second.

Forcing both PU and PD low for more than two seconds activates shutdown mode. Shutdown mode disconnects the top of the resistor chain and moves the wiper to the lowest position, minimizing power consumption.

The three terminals accessing the resistor chain naturally configure the ISL23511 as a voltage divider. A rheostat is easily formed by floating an end terminal or connecting it to the wiper.

Key Features
  • Solid-state volatile potentiometer
  • Push button controlled
  • Single or Auto increment/decrement
    • Fast Mode after 1s button press
  • Shutdown Mode
  • 32 wiper tap points
    • Zero scale wiper position on power-up
  • Low power CMOS
    • VCC = 2.7V to 5.5V
    • Terminal voltage, 0 to VCC
    • Standby current, 3µA max
  • RTOTAL value = 10kΩ, 50kΩ
  • Packages
    • 8 Ld SOIC and 10 Ld µTQFN (2.1x1.6mm)
  • Pb-free (RoHS compliant)
Applications
  • Volume Control
  • LED/LCD Brightness Control
  • Contrast Control
  • Programming Bias Voltages
  • Ladder Networks
Typical Diagram
Application Notes
TitleTypeUpdatedSizeOther Languages
AN9705: A Theoretical View of Coherent SamplingPDF13 Nov 201425 KB
AN9675: Coherent and Windowed Sampling with A/D ConvertersPDF13 Nov 2014160 KB
AN1699: Digital Control Potentiometers Offer Hidden Benefits for Many DesignsPDF13 Nov 2014129 KB
AN1425: Get Precision Performance from a Digitally Controlled Potentiometer (DCP)PDF13 Nov 201456 KB
AN002: Principles of Data Acquisition and ConversionPDF13 Nov 2014257 KB
Datasheets
TitleTypeUpdatedSizeOther Languages
ISL23511 DatasheetPDF09 Sep 2015484 KB
Software
TitleTypeUpdatedSizeOther Languages
DCP Evaluation Board Software v5.2.0EXE20 Mar 20152.73 MB
User Guides
TitleTypeUpdatedSizeOther Languages
Digital Potentiometer (DCP) Evaluation USB Kit User GuidePDF12 May 2015330 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
ISL23511UFB8Z8 Ld SOIC0.07281260RoHS
ISL23511UFB8Z-TK8 Ld SOIC T+R0.07281260RoHS
ISL23511UFRU10Z-TK10 Ld uTQFN T+R0.004610260RoHS
ISL23511WFB8Z8 Ld SOIC0.07281260RoHS
ISL23511WFB8Z-TK8 Ld SOIC T+R0.07281260RoHS
ISL23511WFRU10Z-TK10 Ld uTQFN T+R0.0046101260RoHS
ISL23511 Datasheet 09 Sep 2015
8 Ld SOIC T+R ISL84514
10 Ld uTQFN T+R ISL23511
ISL23511
AN9705: A Theoretical View of Coherent Sampling 13 Nov 2014
AN9675: Coherent and Windowed Sampling with A/D Converters 13 Nov 2014
AN1699: Digital Control Potentiometers Offer Hidden Benefits for Many Designs 13 Nov 2014
AN1425: Get Precision Performance from a Digitally Controlled Potentiometer (DCP) 13 Nov 2014
AN002: Principles of Data Acquisition and Conversion 13 Nov 2014
DCP Evaluation Board Software v5.2.0 20 Mar 2015
Digital Potentiometer (DCP) Evaluation USB Kit User Guide 12 May 2015