Features
- Volatile solid-state potentiometer
- 2-pin UP/DN interface
- DCP terminal voltage, 2.7V to 5.5V
- Tempco 35 ppm/°C typical
- 32 wiper tap points
- Low power CMOS
- Active current, 25µA max.
- Supply current 0.3µA
- Available RTOTAL values = 10kΩ, 50kΩ, 100kΩ
- Temperature Range -40°C to +85°C
- Packages
- 6 Ld SC-70, SOT-23
- Pb-Free Plus Anneal Available (RoHS Compliant)
ISL90461 Functional Diagram
Description
The Intersil ISL90461 is a digitally controlled potentiometer (XDCP). Configured as a variable resistor, the device consists of a resistor array, wiper switches, a control section, and volatile memory. The wiper position is controlled by a 2- pin Up /Down interface. The potentiometer is implemented by a resistor array composed of 31 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 and U/D inputs. The device can be used in a wide variety of applications including:
- LCD contrast control
- Parameter and bias adjustments
- Industrial and Automotive Control
- Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
- Laser Diode driver biasing
- Gain control and offset adjustment
| Part Number | Status | Samples | Stock | RoHS | Package | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Resistance Options (kΩ) | Pitch (mm) | Pkg. Dimensions (mm) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ISL90461TIE627Z-TK | Obsolete | N/A | In Stock | RoHS:EN | SC70 | 6# | Reel | 1 | 100kΩ | 0.7mm | 2.0 x 1.2 x 0.50 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +85°C |
| ISL90461TIH627Z-TK | Obsolete | N/A | Out of Stock | RoHS:EN | SOT23 | 6# | Reel | 1 | 100kΩ | 1mm | 2.9 x 1.6 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +85°C |
| ISL90461UIE627Z-TK | Obsolete | N/A | Out of Stock | RoHS:EN | SC70 | 6# | Reel | 1 | 50kΩ | 0.7mm | 2.0 x 1.2 x 0.50 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +85°C |
| ISL90461UIH627Z-TK | Obsolete | N/A | Out of Stock | RoHS:EN | SOT23 | 6# | Reel | 1 | 50kΩ | 1mm | 2.9 x 1.6 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +85°C |
| ISL90461WIE627Z-TK | Obsolete | N/A | Out of Stock | RoHS:EN | SC70 | 6# | Reel | 1 | 10kΩ | 0.7mm | 2.0 x 1.2 x 0.50 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +85°C |
| ISL90461WIH627Z-TK | Obsolete | N/A | Out of Stock | RoHS:EN | SOT23 | 6# | Reel | 1 | 10kΩ | 1mm | 2.9 x 1.6 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +85°C |
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- Manual - Development ToolsPDF 2.16 MB AN1555 Sep 17, 2025
- 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 534 KB an133 Jun 06, 2005AI-generated Summary: The document explains how digitally controlled potentiometers (XDCPs) enable programmability in amplifier circuits by adjusting cutoff frequency and gain. It details the design of a non-inverting amplifier with variable resistors forming an RC low pass filter and gain control. Techniques to reduce potentiometer resistance for high-frequency applications are described, allowing gain from 1 to 2 and cutoff frequency from 130kHz to over 1MHz. The amplifier’s parameters are controlled via a serial bus, enabling computer-based customization.
- Application NotePDF 280 KB an1157 Apr 29, 2005AI-generated Summary: Digitally controlled potentiometers (XDCPs) enable precise power supply and DC to DC converter control by allowing cascading configurations for fine and coarse voltage adjustments. These devices store wiper settings in nonvolatile memory, ensuring long-term reliability and simplifying manufacturing and testing. XDCPs improve repeatability, reduce human error, and enhance resistance to environmental stress, making them superior to mechanical potentiometers in power applications.
- 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 513 KB an1173 Jan 19, 2004AI-generated Summary: The document explains how to trim DC/DC converter modules and discrete circuits using digital potentiometers (DCPs) like the ISL95810UIU8. It details resistor values for DOSA and Vicor modules, showing how DCPs adjust output voltage within a ±10% range by changing code values. It also covers output voltage setting and margining techniques for POLA and DOSA modules using external resistors and FETs, highlighting that replacing these with DCPs enables software-controlled voltage adjustment with multiple steps.
- 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 534 KB an133 Jun 06, 2005AI-generated Summary: The document explains how digitally controlled potentiometers (XDCPs) enable programmability in amplifier circuits by adjusting cutoff frequency and gain. It details the design of a non-inverting amplifier with variable resistors forming an RC low pass filter and gain control. Techniques to reduce potentiometer resistance for high-frequency applications are described, allowing gain from 1 to 2 and cutoff frequency from 130kHz to over 1MHz. The amplifier’s parameters are controlled via a serial bus, enabling computer-based customization.
- Application NotePDF 280 KB an1157 Apr 29, 2005AI-generated Summary: Digitally controlled potentiometers (XDCPs) enable precise power supply and DC to DC converter control by allowing cascading configurations for fine and coarse voltage adjustments. These devices store wiper settings in nonvolatile memory, ensuring long-term reliability and simplifying manufacturing and testing. XDCPs improve repeatability, reduce human error, and enhance resistance to environmental stress, making them superior to mechanical potentiometers in power applications.
- 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 513 KB an1173 Jan 19, 2004AI-generated Summary: The document explains how to trim DC/DC converter modules and discrete circuits using digital potentiometers (DCPs) like the ISL95810UIU8. It details resistor values for DOSA and Vicor modules, showing how DCPs adjust output voltage within a ±10% range by changing code values. It also covers output voltage setting and margining techniques for POLA and DOSA modules using external resistors and FETs, highlighting that replacing these with DCPs enables software-controlled voltage adjustment with multiple steps.View More (7)
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