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TMS320F2800157-Q1: VREFHI input current in F2800157

Kita Li
Intellectual 2025 points
Part Number: TMS320F2800157-Q1

Tool/software:

Hi experts,

Good day! My customer is using 2800157 and he wants to know if the VREFHI input current is related the number of ADC. If they use more ADC channels, then require more current? 

And in the table it only has typ VREFHI input current. How is the maximal current?

Thanks!

Best Regards

Kita

  • 0
    TI__Mastermind 35185 points

    Hi Kita,

    VREFHI current in the spec is for the 2 ADC modules.  In sync mode conversion, both ADCs convert at the same time and there can only be one SOC converted at one time.  Converting many channels does not matter since those channels will end up being converted sequentially and VREFHI current would still be around the typical value.  From internal characterization, max value can reach up to 150uA.

    Regards,

    Joseph