Is capacitor on pin DEC2 necessary in nRF51822 on internal LDO setup

[Haz]

Hi!

I have a question regarding nRF51822 supply in internal LDO setup. Is decoupling capacitor on pin DEC2 necessary in this supply setup? Looking at schematic in nRF51 Reference Manual in section Power Supply, this line - DEC2 is connected to 1.7 LDO regulator for Flash Power. Is this capacitor necessary for proper LDO operation?. We assume that I have stable power source of my nRF.

Thanks in advance!

[Andreas]

Hi,

 

Decoupling on DEC2 (C10) is needed for both DC/DC and LDO operation.

 

Best regards,

Andreas