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TLV3702: Input capacitance

Ambroise Suter
Expert 3910 points
Part Number: TLV3702
Other Parts Discussed in Thread: OPA657

Hello,

we wan't to model our signal chain as accurate as possible. Can you share the input capactitance of the TLV3702 and OPA657?

Thank you and best regards,

Ambroise

  • +1
    Guru 140200 points

    Hi Ambroise,

    the input capacitances of OPA657 are given in the datasheet. See under "input impedance".

    Kai

  • +1 in reply to kai klaas69
    TI__Genius 12650 points

    Hi Ambroise,

    Thank you for your question. Typically, the input capacitance of the TLV3702 is less than 10 pF.

    Since I am assuming this is not a fast application, I would recommend placing a 100 Ω or 1 kΩ resistor between the output of the op amp and the input of the TLV3702 if the OPA657 is driving the inputs of the comparator. 

    Are you driving an input of the TLV3702 with the output of the OPA657?

    Best Regards,

    Joe

    Applications Engineer

    Linear Amplifiers Business Unit | Comparators Product Line (CMPS)

    All information in this correspondence and in any related correspondence is provided “as is” and “with all faults”, and is subject to TI’s Important Notice (http://www.ti.com/corp/docs/legal/important-notice.shtml)