Capacitor values on DEC pins

Question

I'm opening a different thread to discuss further my latest findings. 
 I'm using a module E73-2G4M04S1AX that is based on nRF52810. My project has very strict power requirements as I want it to last for more than 3-4 years. 
 However as you can read on my previous thread I'm having some unexpected and random battery drain issues. 
 After further investigation I found out that the capacitors on DEC pins inside the module have different values than the ones in the reference circuit. 
 This is the internal schematic of the module I'm using. 
 
 This is my design with its external passive components. 
 
 If I remove all the external capacitors I added, and keep only the C5 (1uF on DEC4 pin). Will the design be improved? 
 There's one capacitor on DEC3 that is far off... 100nF instead of 100pF... Which I cannot remove from inside the module. Will that cause any further problems?

JONATHAN LL · Accepted Answer

George555 said: Should I modify the external capacitor on DEC4 to something like 0.82uF (+ 100nF internal) to get closer to the right value? 
 It is difficult to say, using a 1pF or a 0.82pF both are better options then not adding any of them. The performance might that is effected might be the radio, as the value of the decupling will effect the filering of spurious that effects the RF. I would test both values and see if you see any difference on radio performance. I dont think it will have a major impact on current draw. 
 George555 said: Regarding DEC3. Unfortunately I cannot change it. 
 It is what it is, you will just try to make the best out of the situation and if it cant be changed than so bee it. Test and see of you gett acceptable results. If you have any other questions feel free to ask and i will do my best to help. Regards, Jonathan

Capacitor values on DEC pins

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