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AD9959 Power suquence issue

Question asked by arik on Sep 5, 2015
Latest reply on Sep 9, 2015 by sitti

Hello everyone,

We are experiencing issues with AD9959 power sequence.

When we first supply 3.3V to the device, following by 1.8V, there is no communication with the SPI.

Only when the 1.8V is supplied before the 3.3V, the communication on the SPI works as expected.

I could not find any recommended power up sequence in the datasheet, is that a known issue?

Regards,

Arik.

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