TIPD120, 0-100C, 0.005 %FSR, Ratiometric 3-Wire RTD Acquisition System

Texas Instruments の部品 ADS1247IPW を使用したリファレンス デザイン

メーカー

Texas Instruments
  • アプリケーションカテゴリ
    データ変換
  • 製品タイプ
    アナログからデジタルへの変換

最終製品向け

  • Access Control
  • Industrial

説明

  • TIPD120, Precision Verified Design provides theory, component selection, simulated and measured results of a single-supply, 3-wire RTD acquisition system that accurately measures temperature from 0C - 100C. The voltage input and reference voltage are placed in a ratiometric configuration in order to reduce the errors from noise and drift and improve overall system accuracy. The ADS1247 simplifies the front-end solution by incorporating the required current sources, programmable gain amplifier, and digitally-controlled multiplexer onto one chip. A unique "chopping" technique is used to minimize any difference between the two current sources. The TPS7A4901 adjustable-output, high-PSRR LDO is suggested as a cleaner power alternative over the existing USB supply to further improve system accuracy

主な特徴

  • ADC Resolution
    24 Bit
  • ADC Sampling Rate
    2K SPS

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