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)
ISL23511 Functional Diagram
Description
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.
Parameters
| Attributes | Value |
|---|---|
| Resistance Taper | Linear |
| Taps (#) | 32 |
| Resistance Options (kΩ) | 10 |
| Channels (#) | 1 |
| Interface | Pushbutton |
| Memory Type | Volatile |
| Vcc (V) | 2.7 to 5.5 |
| Supply Current Icc (µA) | 0.6 |
| Single Supply Voltage Range (V) | 5.5 |
| Wiper Current (mA) | 3 |
| Wiper Resistance (ohms) | 130 |
| VL Terminal Voltage (Max) (V) | 5.5 |
| End-to-End Temperature Coefficient (ppm/°C) | 80 |
| Middlepoint Ratiometric Tempco | 25 |
| Advanced Features | Shutdown mode and auto increment |
| Qualification Level | Standard |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| SOICN | 4.9 x 3.9 x 0.00 | 8 | 1.3 |
Applications
- Volume Control
- LED/LCD Brightness Control
- Contrast Control
- Programming Bias Voltages
- Ladder Networks
| Part Number | Status | Samples | Stock | RoHS | Package | Budgetary Price (USD) | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ISL23511WFB8Z | Active | Available | In Stock | RoHS:EN | SOIC | 1ku | $0.9 | 8# | Tube | 1 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | SINGAPORE |
| ISL23511WFB8Z-TK | Active | N/A | In Stock | RoHS:EN | SOIC | 1ku | $0.9 | 8# | Reel | 1 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C | MALAYSIA | SINGAPORE |
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- Manual - Development ToolsPDF 2.16 MB AN1555 Sep 17, 2025
- Product Change NoticePDF 152 KB PCN12085 Nov 07, 2012
- Application NotePDF 281 KB an1425 May 22, 2008AI-generated Summary: Digitally Controlled Potentiometers (DCPs) offer precise resistance control with configurations in both serial and parallel modes, featuring fixed resistors and various resistance options. The ISL22317 model provides 1% precision with 128 taps and can function as a two-terminal variable resistor or three-terminal potentiometer, delivering high accuracy and low temperature coefficient. DCPs can outperform DACs in fine tuning within limited ranges, offering better resolution with fewer bits. Resolution varies with voltage and tap count, as detailed in the provided tables. Usage guidelines and liability disclaimers emphasize proper application and safety considerations.
- Application NotePDF 251 KB an1699 Jan 19, 2004AI-generated Summary: This document outlines important legal disclaimers and usage guidelines for semiconductor products. It emphasizes user responsibility for product design, disclaims liability for damages, and prohibits unauthorized modifications or reverse engineering. Products are categorized by quality grades with specific application recommendations. Users must comply with safety, environmental, and export regulations. Renesas disclaims warranties and liability for improper use or noncompliance. Contact information for global sales offices is provided.
- Application NotePDF 503 KB an9675 Aug 13, 1999AI-generated Summary: Effective Number of Bits (ENOB) depends critically on precise coherence in A/D sampling, with small frequency shifts significantly impacting accuracy. Unwrapping reconstructs coherently sampled sine waves, while windowing controls spectral leakage by shaping the acquisition window. Resampling and interpolation adjust sample sets to avoid leakage in FFT analysis. Different window functions balance side lobe levels and bandwidth, affecting spectral resolution and leakage reduction.
- Application NotePDF 287 KB an9705 Feb 21, 1997AI-generated Summary: Coherent sampling requires the ratio of signal frequency to sampling frequency to be a rational number, expressed as ko/N. When this condition is not met, frequency smearing occurs across bins. Data Acquisition Systems (DAS) can mitigate this by windowing, fixing sampling frequency and tuning input frequency, or fixing input frequency and tuning sampling frequency. The latter two methods are practical for most systems. Pseudo-code illustrates the frequency response for non-integer ko values.
Recommended Documents (1)
Datasheets (1)
- Manual - Development ToolsPDF 2.16 MB AN1555 Sep 17, 2025
Manuals & Guides (1)
- Application NotePDF 281 KB an1425 May 22, 2008AI-generated Summary: Digitally Controlled Potentiometers (DCPs) offer precise resistance control with configurations in both serial and parallel modes, featuring fixed resistors and various resistance options. The ISL22317 model provides 1% precision with 128 taps and can function as a two-terminal variable resistor or three-terminal potentiometer, delivering high accuracy and low temperature coefficient. DCPs can outperform DACs in fine tuning within limited ranges, offering better resolution with fewer bits. Resolution varies with voltage and tap count, as detailed in the provided tables. Usage guidelines and liability disclaimers emphasize proper application and safety considerations.
- Application NotePDF 251 KB an1699 Jan 19, 2004AI-generated Summary: This document outlines important legal disclaimers and usage guidelines for semiconductor products. It emphasizes user responsibility for product design, disclaims liability for damages, and prohibits unauthorized modifications or reverse engineering. Products are categorized by quality grades with specific application recommendations. Users must comply with safety, environmental, and export regulations. Renesas disclaims warranties and liability for improper use or noncompliance. Contact information for global sales offices is provided.
- Application NotePDF 503 KB an9675 Aug 13, 1999AI-generated Summary: Effective Number of Bits (ENOB) depends critically on precise coherence in A/D sampling, with small frequency shifts significantly impacting accuracy. Unwrapping reconstructs coherently sampled sine waves, while windowing controls spectral leakage by shaping the acquisition window. Resampling and interpolation adjust sample sets to avoid leakage in FFT analysis. Different window functions balance side lobe levels and bandwidth, affecting spectral resolution and leakage reduction.
- Application NotePDF 287 KB an9705 Feb 21, 1997AI-generated Summary: Coherent sampling requires the ratio of signal frequency to sampling frequency to be a rational number, expressed as ko/N. When this condition is not met, frequency smearing occurs across bins. Data Acquisition Systems (DAS) can mitigate this by windowing, fixing sampling frequency and tuning input frequency, or fixing input frequency and tuning sampling frequency. The latter two methods are practical for most systems. Pseudo-code illustrates the frequency response for non-integer ko values.
Application Notes & White Papers (4)
- Product Change NoticePDF 152 KB PCN12085 Nov 07, 2012
Product Notices (PCN, EOL, etc) (2)
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