CC2640R2F: Stand by Current Consumption in CC2640r2f is not 1uA

Kalpesh Thorat23

Prodigy 110 points

Part Number: CC2640R2F

Hello,

My question is related to Current Consumption of CC2640r2f in Stand by mode.

I have observed two values of stand by current consumption while testing on launchpad

1.When I am not advertising (i.e) //SimplePeripheral_createTask(); ------------it is coming as 1.485uA

2.When I am checking in between the two advertisement packets interval (100msec)-----------------it is coming as 2.708uA

I want to achieve current consumption to 1uA. How to achieve ?

over 6 years ago

0 YiKai Chen over 6 years ago

Guru 735685 points

There is always very small current leakage on PCB so these two current consumption 1.485uA and 2.708uA sound reasonable.

0 J Lindh over 6 years ago

TI__Guru 57865 points

Are you measuring on your own custom board or the launchpad?

0 Kalpesh Thorat23 over 6 years ago in reply to J Lindh

Prodigy 110 points

Hello Joakim,

I am measuring on launchpad.
I am advertising 11 packets. I have set 1000msec as advertisement interval between packets. As per my understanding Stand by current depends upon VDDR recharge pulses in between advertisement packets.
What I observed is recharge pulses goes on decreasing with respect to advertisement packets and so as stand by current.
Still least stand by current is seen as 1.40uA. (where as,as per SWRA478D it should be 0.88uA)
How to achieve 1uA?

0 Kalpesh Thorat23 over 6 years ago in reply to YiKai Chen

Prodigy 110 points

Hello YK Chen,

But I have disabled all the GPIOs which are not in use. Also as per SWRA478D it should be 0.88uA for 1000 msec interval between advertisement packets

0 YiKai Chen over 6 years ago in reply to Kalpesh Thorat23

Guru 735685 points

Do you use Power Analyzer when you measure those power consumptions?

0 Kalpesh Thorat23 over 6 years ago in reply to YiKai Chen

Prodigy 110 points

Yes,Power analyzer from Keysight

0 J Lindh over 6 years ago in reply to Kalpesh Thorat23

TI__Guru 57865 points

Hi,
Have you followed the recommendations in this document? http://www.ti.com/lit/swra478

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CC2640R2F: Stand by Current Consumption in CC2640r2f is not 1uA