Hi rahmaevao,

The EVAL-ADM3053EBZ evaluation board demonstrates the pcb layout techniques and external components used to meet EN55022 Class B emissions. The LTC6900 low power oscillator is used to provide stimulus to the ADM3053 isolated CAN transciever…

The best way to power down the LTC1799 or the LTC6900 is to use the applications circuit "Shutting Down the LTC1799" shown on page 14 of the LTC1799 data sheet. Since these parts do not draw much current, you can easily power thrm through any one on many…

Wassim,

I intend to use external oscillator LTC6900 which starts very fast (tens of microseconds) so it probably can be turning on by EXT_WAKE.

Though, the BF’s internal crystal-based oscillator (CLKIN-XTAL) could be better case, but I don’t know, how…

There can be several possible things at work here. For now, let's assume that all of the digital communication is correct.

One possibility is capacitive loading on the output. The output driver is reasonably strong, but if the output is driving some…