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TLV320ADC3140: Swift excessive Input

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Replies: 6

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Part Number: TLV320ADC3140

Hi,

My customer is evaluating TLV320ADC3140 and abnormal data is outputted when swift excessive voltage is inputted.

Output data is normal when voltage is not swift as following attached.

TLV320ADC3140.xlsx

This symptom appears in spite of input channel port and zero data is outputted when swift excessive voltage is inputted into multiple channels simultaneously.

They are using only PGA function on related level adjusting(not using digital volume, auto gain).

I have two questions.

・Is this behavior caused by any function of this ADC?

・Is there any hided register to find this condition?

Best Regards,

Kuramochi