特性
- 256 Resistor Taps - 0.4% Resolution
- I2C Serial Interface
- 5 General Purpose Non-Volatile Bytes
- Non-volatile Storage of Wiper Position
- Write Protection
- Wiper Resistance: 70Ω Typical @ VCC = 3.3V
- Standby Current 10µA Max
- Power Supply: 2.7V to 5.5V
- 50kΩ, 10kΩ Total Resistance
- High Reliability
- Endurance: 1,000,000 Data Changes per Bit per Register
- Register Data Retention: 50 Years @ T ≤ +55°C
- 8 Ld MSOP and 8 Ld TDFN Packaging
- Pb-Free Pinouts (RoHS compliant)
描述
Support is limited to customers who have already adopted these products.
The ISL95811 integrates a digitally controlled potentiometer (XDCP) and non-volatile memory on a monolithic CMOS integrated circuit. The digitally controlled potentiometer is implemented with a combination of resistor elements and CMOS switches. The position of the wiper is controlled by the user through the I2C bus interface. The potentiometer has an associated volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR), that can be directly written to and read by the user. The content of the WR controls the position of the wiper. At power-up the device recalls the contents of the DCP's IVR to the WR. The DCP can be used as three-terminal potentiometer or as two-terminal variable resistor in a wide variety of applications including control, parameter adjustments and signal processing.
| Part Number | Status | Samples | Stock | Package | Lead Count (#) | Carrier Type | Moisture Sensitivity Level (MSL) | Pitch (mm) | Pkg. Dimensions (mm) | Pb (Lead) Free | Pb Free Category | Temp. Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ISL95811WFRTZ | Obsolete | N/A | Out of Stock | TDFN | 8# | Tube | 1 | 16.5mm | 3.0 x 3.0 x 0.75 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C |
| ISL95811WFRTZ-TK | Obsolete | N/A | Out of Stock | TDFN | 8# | Reel | 1 | 16.5mm | 3.0 x 3.0 x 0.75 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C |
| ISL95811WFUZ | Obsolete | N/A | Out of Stock | MSOP | 8# | Tube | 1 | 0.7mm | 3.0 x 3.0 x 0.00 | Yes | Pb-Free 100% Matte Tin Plate w/Anneal-e3 | -40 to +125°C |
| ISL95811WFUZ-T | Obsolete | N/A | Out of Stock | MSOP | 8# | Reel | 0.7mm | 3.0 x 3.0 x 0.00 | No | -40 to +125°C | ||
| ISL95811WFUZ-TK | Obsolete | N/A | Out of Stock | MSOP | 8# | Reel | 0.7mm | 3.0 x 3.0 x 0.00 | No | -40 to +125°C |
- EOL 通告英语PDF 200 KB PLC15033 2015年6月11日
- 产品变更通告英语PDF 98 KB PCN12094 2012年12月19日
- 产品变更通告英语PDF 135 KB PCN12084 2012年10月15日
- 产品变更通告英语PDF 117 KB PCN11059 2011年6月17日
- 应用说明英语PDF 281 KB an1425 2008年5月22日AI 生成的摘要: 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.
- 应用说明英语PDF 251 KB an1699 2004年1月19日AI 生成的摘要: 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.
- 应用说明英语PDF 377 KB an1690 2004年1月19日AI 生成的摘要: The document discusses electronic components and design considerations for patient monitors, focusing on low power instrumentation amplifiers for portable ECGs and pulse oximetry systems. It explains the use of specific wavelengths (660nm, 805nm, 940nm) to measure oxygen saturation via photodiodes and highlights the need for precise, low-noise amplifiers and 16-bit ADCs. It emphasizes balancing power consumption, noise, resolution, and portability in medical device design. The document also includes a block diagram for pulse oximetry and outlines Renesas Electronics’ product quality classifications and legal disclaimers.
- 应用说明英语PDF 503 KB an9675 1999年8月13日AI 生成的摘要: 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.
- 应用说明英语PDF 287 KB an9705 1997年2月21日AI 生成的摘要: 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.
推荐文档 (1)
数据手册 (1)
手册和指南 (1)
- 应用说明英语PDF 281 KB an1425 2008年5月22日AI 生成的摘要: 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.
- 应用说明英语PDF 251 KB an1699 2004年1月19日AI 生成的摘要: 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.
- 应用说明英语PDF 377 KB an1690 2004年1月19日AI 生成的摘要: The document discusses electronic components and design considerations for patient monitors, focusing on low power instrumentation amplifiers for portable ECGs and pulse oximetry systems. It explains the use of specific wavelengths (660nm, 805nm, 940nm) to measure oxygen saturation via photodiodes and highlights the need for precise, low-noise amplifiers and 16-bit ADCs. It emphasizes balancing power consumption, noise, resolution, and portability in medical device design. The document also includes a block diagram for pulse oximetry and outlines Renesas Electronics’ product quality classifications and legal disclaimers.
- 应用说明英语PDF 503 KB an9675 1999年8月13日AI 生成的摘要: 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.
- 应用说明英语PDF 287 KB an9705 1997年2月21日AI 生成的摘要: 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.
应用说明和白皮书 (5)
- EOL 通告英语PDF 200 KB PLC15033 2015年6月11日
- 产品变更通告英语PDF 98 KB PCN12094 2012年12月19日
- 产品变更通告英语PDF 135 KB PCN12084 2012年10月15日
- 产品变更通告英语PDF 117 KB PCN11059 2011年6月17日
产品通告(产品变更、EOL 等) (5)
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