I have been recently interested into creating my own CC2530 board for a Zigbee device and was following the sample schematics provided by TI. I am a newbie to board design and have some basic questions, here is my first one.
I understand that decoupling capacitors are needed with a power source to smooth voltage when it drops for different reasons during operation. The cc2530 has multiple pins connected to the power source.
Why does the sample circuit attach a capacitor for every pin? Wouldn't this be equivalent to one capacitor between power source and the ground, or do we need to make sure while designing the PCB to locate each capacitor as near as possible to the pin that it is smoothing?