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TDC1000-TDC7200EVM: clock source

luca pizzini61
Prodigy 90 points

Part Number: TDC1000-TDC7200EVM

I want use TDC1000 + TDC7200 for water meter purpose.

I have read the "MSP430 Value Line Sensing MCUs" where I found "Programmable Clock Source Using MSP430 MCUs".

The datasheet of MSP430 have a 0.25% jitter (clock to clock). The EVM use an oscillator with 60ps jitter @ 100MHz.

My question is:

May I think to use the MSP430 as clock source for the EVM or not (because the jitter is too high)?

Thank you in advance

Luca

  • 0
    TI__Mastermind 31655 points
    Hi Luca,

    It is certainly possible to use the integrated clock function of the MSP430, and that is actually an option that you can evaluate using the TDC1000-TDC7200EVM. You can select to use an external oscillator or the clock source from the MSP430 on the EVM. You will lose a bit of accuracy with the higher jitter, but if that is acceptable for your application, it is a very efficient solution.

    Regards,