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Regarding adc AD9648

Question asked by sureshkumarv on Mar 28, 2014
Latest reply on Apr 4, 2014 by DougI

Hello All,


I have designed custom board based on AD9268 evaluation board which is recommended by ADI in which I am using four no. of AD9648 adc's and output is going to KINTEX-7 FPGA. I have started testing of adc's

.Input to adc is sine wave 60MHz and sampling clock is sine wave 50 MHz (under sampling). Both the clock sources are synchronous.My problem is I am getting SNR of 30dbfs where as data sheet says 74 dbfs at 70MHz, pls help me out in improving my SNR.