• Comment on Can I get that shunt reference to go, please?

  

  Matt Heyse

  Excel sheet doesn't handle negative I Load currents well. Like the out-flowing current (negative current) on the inputs of a TI LM393 Voltage Comparator. A common place to use a resistor-Vref to compare against.

  • 8 months ago
  • Technical articles
  • Power management

• VREF On A Budget

  

  Jose Quinones

  As engineers, if we had an infinite budget, we could create an infinite number of high-quality gadgets. Unfortunately, few of us have access to unlimited resources, so we must use our available assets as purposefully as possible. I was reminded of this…

  • over 11 years ago
  • Technical articles
  • Industrial

• 解決比較器最高挑戰：顫振（chatter）

  

  Chantal Lin

  Other Parts Discussed in Post: LM2903 , TLV7012 , TLV3605 德州儀器作者: Izak Walker 比較器是幾乎所有應用都會出現的基本類比元件。描述比較器有此一說，視之為 1 位元類比轉數位轉換器（1-bit ADC）：有兩個輸入，一個通常用作電壓參考，另一個用作輸入電壓訊號。依據作為參考的輸入為何，以及輸入電壓為何，比較器輸出會高低切換。這些元件有很多用途，特別是在混合訊號和控制應用，例如過電壓和欠電壓檢測以及溫度感測。 比較器的概念很簡單，但在使用過程中還是有幾個設計挑戰十分常見…

  • over 1 year ago
  • Taiwan
  • taiwan

• How to achieve microvoltage-level precision in thermopile applications

  

  Marek Lis

  Other Parts Discussed in Post: OPA333 , OPA189 , OPA387 , LM7705 Thermopiles are useful noncontact sensors for measuring not only temperature but also detecting select gases. Since thermopiles may have relatively high series impedance, they present numerous…

  • over 2 years ago
  • Technical articles
  • Analog

• Comment on Why doesn’t my INA CMRR change with gain?

  

  Rodrigo Villela

  Dear TI, I'm using INA332 in my project with wheatstone brigde (gain = 191,6/ input signal ~0mV up to 7,5mV), so I having stability problems output signal with differente board with same setup. I've put resistor 470R@0.5% Vref pin, where I have around…

  • over 3 years ago
  • Archives
  • Precision Hub

• Comment on How to dynamically control the output voltage with a COT regulator

  

  Dave Knight

  I don't see how the numbers add up. Am I doing something wrong? VREF(1+RFB2/RFB1+RFB2/RF) - VDAC*RFB2/RF VREF(1+10k/3.4k+10k/10k)-VDAC*10k/10k VREF*4.94-VDAC LM5085 VREF is 1.25V 1.25V*4.94 -VDAC =6.175V-VDAC This means the DAC can set the output…

  • over 5 years ago
  • Technical articles
  • Power management

• How to design current sensing and protection with off-the-shelf op amps

  

  Hooman Hashemi

  Other Parts Discussed in Post: LM7301 Protecting expensive, critical or hard-to-repair equipment against overcurrent and power-supply fault conditions can be achieved with universally available operational amplifiers ( op amps ) and a few external components…

  • over 7 years ago
  • Archives
  • Precision Hub

• Comment on Can overcurrent protection be simple and precise, while minimizing cost?

  

  astroelectronic@

  R1=((Vin-Vref-Vbe)/((Iout/Beta)+Iak))=((7V-2.5V-0.7V)/((50mA/100)+35uA))=7102.8 Ohm=7K102

  • over 8 years ago
  • Technical articles
  • Power management

• 電圧リファレンスを理解する：シャントと直列、どちらのトポロジが適しているか

  

  Yurina O.

  電圧リファレンスには、シャント・リファレンスと直列リファレンスの 2 種類があります。 それぞれに固有の使用条件があるので、この 2 種類からどちらかを選択する場合は、そのプロセスの複雑さに気後れを感じることがあります。 比較表は存在しますが、特定のアプリケーション向けにどちらか一方のリファレンス・トポロジを選ぶ方法については、一般に大した情報は得られません。この ブログ・シリーズ では、シャント・リファレンスと直列リファレンスの両方のアプリケーションを取り上げ、どのような場合にそれらを使用すべきかについて説明しつつ…

  • over 3 years ago
  • Japan
  • 電源 IC

• Comment on DAC Essentials: How accurate is your DAC?

  

  Mariusz Krzyzanski

  Kevin, Thanks for this interesting article. I am calculating a total error of a design with the ADS1247 and I want to use your method there. I am wondering if the errors in delta-sigma ADC are also uncorrelated, so I can calculate a typical error using…

  • over 8 years ago
  • Technical articles
  • Analog

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