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ADCMP572 input signals' amplitude are reduced

Question asked by Gonul on Apr 28, 2017


We have a problem with the ADCMP572. We desing the circuit according to figure 26 on the datasheet. (Please, see the attachement file.) also i added  the inputs and output signals osc displays.

The problem is that the input signals' amplitudes are reduced   when i applied the comparator.

 If we leave the VTP and VTN  pin unconnected there are no drop in input signals  but  we can not get output signal in this way.

What can we do?