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DDC112 dead time between chA and chB

Keiichi Kajino
Expert 2365 points

Hi, folks

The page 10 of datasheet desribed intergrator timing(but also specifying not exact).

Is there any dead time betwen chA and chB of SINTx switch?

  • 0
    TI__Guru 62730 points

    Kajino-San,

    We do not spec the if there is deadtime between these two switches as it does not affect the measurement by the front end of the DDC. Are you concerned with charge loss?

    Regards,

    -Adam

  • 0 in reply to Adam Sidelsky
    Expert 2365 points
    Adam,

    Thank you for your input. and sorry for late response due to my vacation.

    This is based upon patent confilict. (against JP# 5018409)
    According to this patent,

    1) Use of consecutive 2 measurement result
    2) 1st measurement for determinate measurement paramater. (i.e. Cap value and integ. time)
    3) 2nd measurement for true value

    Our customer thought that if dead time is exist, it can be avoidable. This is the reason why we want to know about "dead time".
  • 0 in reply to Keiichi Kajino
    TI__Guru 62730 points

    Keiichi-San,

    I don't know about the patent or the patent process. Please let me know if I can help any further.

    Regards,

    -Adam