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Using ADCMP553 for signal recovery

Question asked by PhilippeB on Jul 1, 2013
Latest reply on Aug 13, 2013 by AnnaFeB

Hi all,


I am trying to recover a signal from a photodiode (1 to 100Mhz)

Because the signal is very noisy, voltage range vary and my amplifier output is differential, I decided to use ADCMP553 comparator.

My problem is that comparator outputs just follow the inputs.

I expected a logic PECL output.


Schematic and scope capture include.


Thanks for your help.