3 ms·
Yeah RF is quite a bit different from the usual analog or low-speed digital stuff. I don't have any great suggestions on PDN simulators... one of the reasons I
by exmadscientist 4y ago
Yeah RF is quite a bit different from the usual analog or low-speed digital stuff. I don't have any great suggestions on PDN simulators... one of the reasons I design with the big-V method is to avoid having to simulate this stuff. At the volumes most of my work ships at, trading a few extra MLCCs per board for a large savings in design time is a great tradeoff.
As for datasheets, they're rarely outright wrong. More... detached from reality. For example, a lot of SMPS datasheets will suggest some strange stuff. When you realize the actual rule of "place a low-ESL=physically small part right next to the regulator then the rest of the capacitors nearby", the weirdo advice starts to make sense, and you can tell what you really ought to do. That's why it's really important to separate the intent of the datasheet from the suggested implementation. The intent is usually worth paying attention to... the random use of 0.1uF capacitors, not so much.