System current consumption DC/DC at 3 V between nRF52840 vs nRF52832

[PavanKumar_cr]

Features	nRF52840	nRF52832
System current consumption DC/DC at 3 V	0.5μA at 3V System OFF mode,  no RAM retention 1.5μA System ON mode, no RAM retention 0.7μA All peripherals in IDLE mode 0.03μA per 4kB RAM retention	0.3 μA –No RAM retention 1.2 μA – All peripherals in IDLE mode 1.6 μA – All peripherals IDLE mode (32 kHz + RTC) 20 nA per 4 KB - RAM retention

Hi Nordic, I was performing the processor comparison between nRF52840 and nRF52832 and found that current consumption is 0.7μA when All peripheral in IDLE mode  for nRF52840 and 

1.2μA when All peripheral in IDLE mode  for nRF52832. The current consumption should be greater for nRF52840 compare to  nRF52832 according to my understanding ? Please let me know is this correct or explain why the current consumption is less for nRF52840 . 

[PavanKumar_cr]

nRF52840_PB_v2.0.pdf (nordicsemi.com) ,  https://infocenter.nordicsemi.com/pdf/nRF52832_PB_v1.7.pdf 

Documents used for comparision

[Priyanka]

Hi Pavan,

The current consumption can depend on a lot of factors like the configurations, the mode of operations and also on the peripherals connected and activated. Is this the same for both the chips?

Also, how did you perform the comparison, i.e. was it on a custom board?

Regards,

Priyanka

[PavanKumar_cr]

Hi Priyanka,

  I haven't evaluate anything on the board  . I have gone through the datasheet and  i got these numbers from these datasheet(I have attached the link above) . What I need to know is why nRF52840 consumes less current compare to nRF52832.

Regards,

Pavan

[Priyanka]

Hi Pavan,

I have reported this internally. Seems to be a documentation mistake. You can take a look at the detailed measurements in the Product Specifications:

nRF52840

nRF52832

Regards,

Priyanka

[PavanKumar_cr]

thanks