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MSPM0G1518: input impedance of the comparator

Diana Chabarek
Prodigy 110 points

Part Number: MSPM0G1518

Hello team, 

What is the value of the input impedance of the comparator? As this parameter does not appear to be explicitly specified in the datasheet 

Thank you!

  • +1
    TI__Mastermind 31225 points

    Hi Diana,

    The input of COMP is Hi-Z, can you help me understand why users care about this spec?

    Internally within the MCU, the pins are shared between the GPIO and the COMP; normally the impedance of the GPIO is significantly [edit, fix a typo, smaller] larger than that of the COMP.

    Based on the leakage current at the I/O port, the overall impedance is estimated to exceed 66 MΩ:

    B.R.

    Sal

  • +1 in reply to Sal Ye
    TI__Prodigy 110 points

    Hi Sal, 

    Thank you for the reply. 

    The customer wants to use the MCU-integrated comparator for the charger C 6C-22 and therefore needs the input impedance of this comparator.

    Best regards,

    Diana