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  Devin Cottier

  • over 4 years ago
  • C2000™ microcontrollers
  • C2000™ microcontrollers forum

  RE: launchpadxl-f28377s Vref

  Hi Iker, On the F2837xS device family, VREFLO must always be 0V, so you won't be able to source this externally (on the launchpad it is directly connected to ground). As for the VREFHI voltage, if you want to use a different voltage you could...
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  Mitja Nemec

  • over 4 years ago
  • C2000™ microcontrollers
  • C2000™ microcontrollers forum

  RE: ADC VREFHI settings for F28377 with ref3030

  Hi Devin, looking at the schematics on sheet 4 there is a remark: SW2 and SW3 allow a user to choose between using a clean external reference (such that the full-scale of the ADC is 0 to Vref, where Vref must always be less than VDDA) or use VDDA...
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  J.Z.

  • over 2 years ago
  • Amplifiers
  • Amplifiers forum

  RE: INA333: REF pin driver circuit

  Hello, I found this topic while I was looking for additional information about using an INA333 in single-supply-operation. In the example in the datasheet the device is powered by a 3V power-supply and the REF-input should be supplied with 1.5V (= 3V...
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  Andreas Fellnhofer

  • over 1 year ago
  • C2000™ microcontrollers
  • C2000™ microcontrollers forum

  TMS320F28377S: Incorrect temperature sensor reading

  • Resolved

  , is that the LAUNCHXL uses a unity gain OP-AMP after the voltage reference source ( REF3030 ) to feed the ADC reference
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  Michael Ernst

  • over 3 years ago
  • Power management
  • Power management forum

  RE: REG1117: expected temperature drift and comparable parts

  Hi again, hmmm, so it seems nobody is abler to help me on that. Beside that, can somebody at least help me on that question, it arised when i searched the forums a Little: See thread: REF3030: temperature drift correlation I wrote there Dear...
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  Daniel Scholz47

  • over 3 years ago
  • Data converters
  • Data converters forum

  RE: ADS1248: ADS1248 single ended measurement

  Dear Joseph, indeed i am trying to measure a two wire PT1000. We have temperature of -100 to 100°C maximum. The measurement must be at least as precise as 0.1°C, if possible better. The reason for the Transistor ist, that we do not only...
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  KWON CHEOLSOON

  • over 2 years ago
  • C2000™ microcontrollers
  • C2000™ microcontrollers forum

  TMS320F28377S: 28377s VREFHI PIN Input Voltage question and ADC value error

  • Resolved

  , and ADC result value is wrong. VREFHIA ~ D input 3.0V (use the ref3030 ). An MLCC capacitor of about 10uF
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  Diego Lewis

  • over 3 years ago
  • Power management
  • Power management forum

  RE: LP5907: Temperature coefficient / drift of LP5907

  Hi Joel, I agree with you that the REF3030 is our most cost competitive solution under 55ppm/C between 0 to 70C. It is also important to note that voltage references, unlike LDOs, have a small initial voltage tolerance. In the case of the REF3030...
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  David M. Alter

  • over 3 years ago
  • C2000™ microcontrollers
  • C2000™ microcontrollers forum

  TMS320F28377S: lower cost ADC reference circuit design

  • Resolved

  #1721275 The minimum recommended configuration here is a single reference, e.g. REF3030 , and one buffer amp
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  David M. Alter

  • over 3 years ago
  • C2000™ microcontrollers
  • C2000™ microcontrollers forum

  RE: TMS320F28377S: ADC issue with first sample

  Hi Devin, I got a better DMM (Tektronix DMM912) out of the lab instead of the junk $10 toy meter I had at my desk. REF3030 output is 2.9997V (at pin 2 of U10 on F28377S Launchpad). VREFHIA is 2.9997V (at pin 1 of U11 on LP) I re-measured my AA battery...

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