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ADuM141E working at 9MHz

Question asked by crockery on May 18, 2016
Latest reply on Dec 21, 2016 by bkennedy


ADuM141E is designed to isolate SPI bus running 9MHz. As is shown in upper chart, the gree line is ADuM141E output while the yellow is the input. Most output rising edge is delayed by 16ns, however there is a small group of the output which is delayed  by 30ns, and the waveform is not 50% duty cycle any more.

Could anyone tell me where the problem comes from and how to solve it.