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ADS1015: input & output capacitance

Shashank Meti
Intellectual 1160 points

Part Number: ADS1015
Other Parts Discussed in Thread: ADS1115

What is the SCL pin: input capacitance (Cin), SDA  pin : input capacitance (Cin), Output capacitance (Cout), ALERT/READY pin : Output capacitance (Cout), ADDR pin : input capacitance (Cin) ?

  • 0
    TI__Guru** 100695 points

    Shashank,


    The capacitance for each pin can be derived from the IBIS model for the device. This model is the same for both the ADS1015 and for the ADS1115. However, the pin capacitance varies depending on the package (DRG or RUG). The IBIS model can be found in the link below. Just unzip the file and read it with a text reader.

    www.ti.com/.../sbam025

    The capacitance will be more than just the pin capacitance given in the header because C_comp will contribute some more as well. For information about the IBIS model structure, you can find information in this document:

    www.ti.com/.../snla046.pdf


    Joseph Wu