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MSP430G2553: MSP430G2553

Part Number: MSP430G2553

Hello, I have sensor that measures plasma current of ionosphere. This sensor is biased with ramp signal which hav 1 Hz frequency. At positive voltage bias, sensor collect electron current, on the other hand at negative voltage bias sensor collect positive ion current. At the end of the story I will obtain I-V curve (in some way voltage sweeping). My question is can I use MSP430G2553 internal 10 Bit ADC for reading current that colleting from sensor. This I-V curve is very similar to diode I-V characteristic. Thank you all for answering my question.

  • Hi,

    the internal 10 Bit  ADC of the MSP430G2553 can be used to sample an external analog voltage and convert it to a digital value. It is a single-supply ADC (as the MSP430) so find the ADC input range in the device datasheet.

    Please have a look if your sensor output will deliver the according signal to the ADC input.

    You'll also need to decide whether the delivered ADC accuracy is sufficient for your apllication needs.

    Best regards,

    Britta

  • Hi,
    you cannot measure negative voltage using an MSP430 ADC.
  • Hi,

    did the provided answers help you to move on with your application?
    If so please verify the given answer or otherwise let us know how to further help you.

    Please note that I'll close this thread until end of this week in case I don't here from you anymore. It'll be possible to re-open by simply replying to the thread again, though.

    Best regards,
    Britta

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