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ISL2671286

过时

12-Bit, 20kSPS SAR ADC

特性

  • Drop-In Compatible with ADS1286 (All Performance Grades)
  • Simple SPI-compatible Serial Digital Interface
  • Guaranteed No Missing Codes
  • 20kHz Sampling Rate
  • +4.50V to +5.25V Supply
  • Low 280µA Operating Current (20kSPS)
  • Power-down Current between Conversions: 3µA
  • Excellent Differential Non-Linearity (0.75LSB Max)
  • Low THD: -83dB (Typ)
  • Pb-Free (RoHS Compliant)
  • Available in SOIC Package
ISL2671286 Functional Diagram
ISL2671286 Functional Diagram

描述

The ISL2671286 is a sampling SAR-type ADC which features excellent linearity over supply and temperature variations, and provides a drop-in compatible alternative to all ADS1286 performance grades. The robust high impedance input minimizes errors due to leakage currents, and specified measurement accuracy is maintained with input signals up to the supply rails. The reference accepts inputs between 1. 25V to 5. 0V, providing design flexibility in a wide variety of applications. The ISL2671286 also features up to 8kV Human Body Model ESD survivability. The serial digital interface is SPI compatible and is easily interfaced to all popular FPGAs and microcontrollers. Operating from a 5V supply, power dissipation is 1. 4mW at a sampling rate of 20kSPS and just 15µW between conversions utilizing the Auto Power-Down mode. These features make the ISL2671286 an excellent solution for remote industrial sensors and battery-powered instruments. The ISL2671286 is available in an 8 Ld SOIC package and is specified for operation over the industrial temperature range of –40°C to +85°C.

应用

  • Remote Data Acquisition
  • Battery Operated Systems
  • Industrial Process Control
  • Energy Measurement
  • Data Acquisition Systems
  • Pressure Sensors
  • Flow Controllers
Part NumberStatusSamplesStockRoHSPackageLead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Pb (Lead) FreePb Free CategoryTemp. Range (°C)
ISL2671286IBZObsoleteN/AIn StockRoHS:EN
SOIC8#Tube1YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +85°C
ISL2671286IBZ-TObsoleteN/AIn StockRoHS:EN
SOIC8#Reel1YesPb-Free 100% Matte Tin Plate w/Anneal-e3-40 to +85°C
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筛选

    推荐文档 (1)

  1. 数据手册
    英语
    ISL2671286 Datasheet
    RECOMMENDED
    PDF 880 KB isl2671286 2010年10月12日

    数据手册 (1)

  1. 数据手册
    英语
    ISL2671286 Datasheet
    RECOMMENDED
    PDF 880 KB isl2671286 2010年10月12日

    应用说明和白皮书 (4)

  1. 应用说明
    英语
    AN535: Design Considerations for a Data Acquisition System (DAS)
    PDF 843 KB an535 2002年6月05日
    AI 生成的摘要: A Data Acquisition System (DAS) requires careful design of signal conditioning, transducer selection, and signal transmission to ensure high accuracy. Signal conditioning includes multiplexing, amplification, filtering, and calibration, ideally performed near the transducer. Transducers convert physical variables to electrical signals, often voltage, with low source resistance preferred. Signal paths can be single-ended or differential; differential paths better reject common mode noise, especially for low-level signals. Shielded twisted pairs and balanced lines reduce interference. Filters, typically Butterworth low-pass, prevent aliasing and maintain signal integrity.
  2. 应用说明
    英语
    AN9675: A Tutorial in Coherent and Windowed Sampling with A/D Converters
    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.
  3. 应用说明
    英语
    AN002: Principles of Data Acquisition and Conversion
    PDF 1.08 MB an002 1998年11月19日
    AI 生成的摘要: Data acquisition and conversion involve quantization, where the smallest resolvable analog difference (quantum) depends on the full scale range and resolution. Quantization introduces an irreducible error called quantizing error or noise. Aperture time, the conversion time uncertainty, causes amplitude errors when signals change during conversion. Sample-hold circuits reduce aperture time by storing sampled signals. The Sampling Theorem states that sampling frequency must be at least twice the highest signal frequency to avoid distortion from frequency folding or aliasing. Natural binary code is commonly used for digital representation in converters, with the most and least significant bits defining the code's resolution and value.
  4. 应用说明
    英语
    AN9705: A Theoretical View of Coherent Sampling
    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.

    产品通告（产品变更、EOL 等） (2)

  1. EOL 通告
    英语
    PLC21035 - End of Life Notice
    PDF 1.17 MB 2021年6月25日
  2. 产品变更通告
    英语
    PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site
    PDF 152 KB PCN12085 2012年11月07日

    营销资料 (1)

  1. 宣传手册
    英语
    Analog ICs Brochure
    PDF 5.43 MB R07CL0009EJ0800 Rev.8.00 日本語 2025年11月10日
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