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Joined 2 years ago
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Cake day: June 17th, 2023

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  • Decoupling capacitor is there to filter out hogh frequency ripples from the lower supply. It is very hard for the consumer to know the high frequency current consumption of the chip, and its effects on the chip. Therefore decoupling is something where you should always follow the datasheet recommendation. As others said, ceramic capacitor has lower series resistance and inductance, which makes it the better choice for decoupling. Follow the instructions on layout as well, which usually says that decoupling capacitor should be as close as possible to the chip and grounded well. That being said, if you are prototyping on a breadboard, series inductance of a capacitor may not be your biggest concern, as breadboard connections will have that too. You can also still try to get your circuit working with the capacitor you have while waiting for ceramic one, chances are any capacitor will work good enough.



  • An emergency alert went off on my wife’s phone for a second time at 2.50, and 26 minutes later I still couldn’t fall asleep. I am also anxiously waiting for my alarm to ring any time. I don’t want to disable emergency alarms because they are important, but if they keep sending them in the middle of the night again and again at different hours they aren’t leaving me much choice.