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About ADC

Question asked by Jacky-zheng on Mar 13, 2015
Latest reply on Mar 27, 2015 by TonyM

Hello,

I'm confused with this electric circuit which is signed out on the attachments,The circuit is made up by two parts:ADC driver(AD8138) & ADC(AD9214),Analog signal source come from pin5 of XS1,which is a continous analog signal.

My system is like this:the ture source is from a APD,then use three stage amplify the output of APD,then the analog signal go to pin5 of XS1.

The frequency of the sample clock(FPGA_CLK2) is 100MHz.

attachment<AD8138> is an image of circuit for AD8138;

attachment<AD9214> is an image of circuit for AD9214;

attachment<sheet_part> is a schematic diagram for AD8138 and AD9214 both,the schematic diagram is designed by Altium designer.

Would you please to give me some suggestions?

 

BR

Tom

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