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AD7298 - DCAP capacitor

Category: Hardware
Product Number: AD7298
Software Version: NA

Hi,

what the maximum value for the DCAP capacitor connected to the AD7298.

1 μF recommended but this is the only 1 μF capacitor on the card.

could I use 10 μF instead?

regards

zeev gerber

  • Hi,

    It is possible to use a higher capacitance value like 10µF, but applying a larger capacity cap within the recommended value will also have a larger ESR or ESL and a longer time to start up the internal LDO. Larger capacitance value will also have a longer time settle that is why comparing to 1uF and 10 uF will take a longer time to start up the LDO. 

    Regards,

    Andrei