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Original question:

MSP430FR6047: -

MSP430FR6047: Voltage on UUPS that drives sensors - can't find on data sheet

Richard Wilson1
Prodigy 40 points
Part Number: MSP430FR6047

I am trying to design sensors for an ultrasonic flowmeter. The data sheet has a USS unit and generates a UUPS voltage. But I cannot find out what is the voltage. I need to know this before I can design any sensors.

Many thanks Richard

  • 0
    TI__Guru 60361 points

    Hi Richard,

    Actually, the actual voltage you will see will somewhat depend on the transducer rating and the PVCC voltage But in general, because the CH0_out and CH1_out are part of the PHY, which is powered from PVCC, if your PVCC = 3.3v, you should see approximately 3.3v output.  Make sense?

    Adding.. check the manufacturer's spec on the transducer's voltage rating and make sure it can tolerate this voltage.

  • +1
    Prodigy 40 points

    Thanks Dennis. That sounds about right. As I normally work with drive voltages in the 10V + range, I hoped that the supply would have some voltage doubler and or +/- voltage drive.  I will have to rig one up and see what it performs like.

    Richard

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