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ADC (AD9051)Front end design

Hello ,

I use  log detector (like AD8318) for pulse detection application. Applying detector output to ADC and which is sampled at 20MSPS and use this samples for further processing.

I use ADC part AD9051 in single ended ,DC coupled mode as shown below.

Problem here is output of AD9631 is inverted compared to Vin   (with DC shift )and hence I need  to  use one more inverting amp to make ADC input   compatible with Vin.

Please suggest simple solution for problem?

Thanks /


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