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MSP432P401R: External ADC reference

mohinikumari gonuguntla
Prodigy 100 points
Part Number: MSP432P401R


Hi,

We are using MSP432 ADC with external reference.

The  reference is generated by a external sensor.

The external sensor power supply controlled by micro controller through a MOSFET.

Request you recommendation on hardware initialization sequence.

Is it first controller ADC initialization then sensor power supply  or first sensor supply then msp 432 ADC initialization.

  • 0
    Guru 46710 points

    mohinikumari gonuguntla said:
    Is it first controller ADC initialization then sensor power supply  or first sensor supply then msp 432 ADC initialization.

    It does not matter. ADC will start to operate disregarding external reference is on or not, it's voltage is correct or not. Only requirement is - correct reference voltage shall be there before conversion start, otherwise results obviously will be incorrect.

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