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Distortion on FMCDAQ2 board on Tx

Question asked by stevereine Employee on Apr 25, 2017
Latest reply on May 3, 2017 by larsc

Has anybody looked at the distortion on the AD9144 Tx output of the FMCDAQ2 board vs. the AD9144 board by itself? Both myself and a customer are getting about 15dB worse distortion on the FMCDAQ2 board when running at sample rate of 1GSPS and tone of 150MHz. The AD9144 board is meeting it's datasheet specs, maybe a dB or two off. The big problem seems to be an aliased back fifth order term that shows up at 250MHz on the FMCDAQ2 board.