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THS4541: Waveform data is different between input and output

Conor
Guru 10030 points
Part Number: THS4541
Other Parts Discussed in Thread: ADC3664

Tool/software:

Hi,

I am currently prototyping an application that uses a differential op-amp and ADC to convert measured current values ​​into digital data. The THS4541 and ADC3664 are connected with an SMA connector (30mm). There is a difference between the red frames of the input waveform of the differential op-amp and the output waveform of the ADC, making it difficult to handle them as waveform data. Could you please comment on any possible causes? I would also like to share information such as circuit diagrams, so I would appreciate it if you could approve my private message.

■Input waveform of the differential op-amp

■Output waveform of the ADC

Thanks,

Conor