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AD5412/AD5422 - Compensation capacitor vs settling time

Question asked by J-B on Jul 12, 2017
Latest reply on Jul 21, 2017 by rrosario

Hello,
I read in AD5412/AD5422 datasheet that adding compensation capacitor reduces the bandwidth of the output amplifier and increase settling time.
Would it be possible to have more quantitative information about the COMP capacitor impact on settling time ?
The best would be a relation as: Settling time = f(CCOMP, Cload).
In my case, th AD5412 drives the resitive +capacitive load: 1kOhm (min.) + 20nF (max.).
What would be the minimum compensation capacitor required ? What would be the maximum settling time induced ?

 

Thanks in advance for your feedbacks,

Regards,

Jean-Baptiste Osmont

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