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AD9958/59 EVAL board failures

Question asked by LJM on Jan 5, 2012
Latest reply on Jan 17, 2012 by JLKeip

We have two AD9958 EVAL boards and one AD9959 EVAL board. All were working fine and suddenly began not working. One AD9958 and the AD9959 all of a sudden didn't recognize the external clock input (though it was there and at the right level) and the other AD9958 all of a sudden stopped working (didn't recognize the USB interface) when the 3.3V supply was pulling a lot of current (1.5A). In that case, the USB I/O interface chip was burning hot. Not sure why all of these are failing. Any suggestions?

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