J_M_B
Junior Member level 2
Hi all
I'm working on a design with a specific spike on the 3V3 rail caused by insufficient decoupling of a bluetooth BLE module.
I know I can solve the issue thru trial by trying difference values of capacitance but I would like to know if there is a proper technique.
I assume I should be able to look at the frequency and amplitude of the spike and calculate the value of capacitor which would reduce it to within spec, in this case 10mV pk-pk ripple.
i) Could anyone advise on proper technique to quickly calculating decoupling values for this type of issue?
ii)Am I correct to assum ceramic would always be the best option due to low ESR?
Any thoughts would be much appreciated
I'm working on a design with a specific spike on the 3V3 rail caused by insufficient decoupling of a bluetooth BLE module.
I know I can solve the issue thru trial by trying difference values of capacitance but I would like to know if there is a proper technique.
I assume I should be able to look at the frequency and amplitude of the spike and calculate the value of capacitor which would reduce it to within spec, in this case 10mV pk-pk ripple.
i) Could anyone advise on proper technique to quickly calculating decoupling values for this type of issue?
ii)Am I correct to assum ceramic would always be the best option due to low ESR?
Any thoughts would be much appreciated