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Forum Post: AFE5801 stability issue?

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Hi, I am using AFE5801 for my imaging board and have been experiencing some strange behavior.

I have MAXIM14811 pulser, MAXIM4937 TRSW.

When I send out a pulse, AFE first gets saturated and goes into a oscillatory settling behavior.

The settling behavior changes with the gain of the PGA. (Larger the gain the faster the settling time.

Has anybody seen something like this?

Thanks!

John

gain = 000100

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gain = 001000

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gain = 010000

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gain = 100000

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