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DDC112 different intrgration time between A and B

Keiichi Kajino
Expert 2365 points
Other Parts Discussed in Thread: DDC112

Hi, folks

Can I use DDC112 in below conditions?

1. Can I use different intrgration time between A and B? At below figure, can CONV H and L time

allow to apply in different time?

2. Can the external cap use in different value between A and B? 

  • 0
    TI__Guru 61360 points

    Keiichi-san,

    Yes you can use different integration times for CONV high and CONV low, this is called Noncontinuous Mode and is documented starting on page 16 of the DDC112 Datasheet. 

    For integration Capacitors, see page 11 of the datasheet, the following is mentioned:

    "Usually, all four external capacitors are equal in value; however, it is possible to have differing pairs of external capacitors between Input 1 and Input 2 of the DDC112. Regardless of the selected value of the capacitor, it is strongly recommended that the capacitors for sides A and B be the same."

    Regards,

    -Adam Sidelsky

  • 0 in reply to Adam Sidelsky
    Expert 2365 points

    Adam,

    Thank you for your reply, and I am sorry it takes a much time to confirm with customer.

    I agree this comment rated as verified.

    Thanks again.