Hi, I have a stratix-3 DSP development board that contains a DAC5672. We are using the board for home power monitoring/communication, the DAC is connected the wall via a "coupler" that filters out the 120VAC while letting our higher frequency communication signal through into the power line. Unfortunately, sometimes, we damage the DSP board and we aren't sure why. We are postulating it might have to do with voltage transients making their way through the coupler. Having said that, can the DAC take a 1V,10V or 100V pulse into it's output and still survive? Typically after a failure, the DAC just gets hot and sends noisy data. De-soldering the DAC from the board and installing a new one usually fixes the problem.
Thanks
Matt
