CC2340R5-Q1: Power consumption at power-on

Hi there, 

I saw you asking some questions on power consumption yesterday with the same SDK, and the result was to move to the latest SDK. Can you move to the latest SDK and retest? 

Additionally, please also note the errata for CLK_01 in the following document:

https://www.ti.com/lit/er/swrz136/swrz136.pdf?ts=1710420064310&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FCC2340R5-Q1

Can you switch to using an LF XTAL and test to see if you see the same curve?

Thank you for your response.

We have not seen any resolution to this issue even after moving to the latest SDK. Rather, it now takes more time for the current to subside.

We have also tried a setup that uses LF XTAL, but that did not solve the problem (current consumption equivalent to the SDK 7.20 RCOSC setup).
Sorry to repeat myself, but could you please answer the first four questions?

Hi,

We have exercise current measurements on CC2340 across temperature and we did not observe the behavior.

It is important for us to understand what state is the device at (advertising?) Does it ever enter standby? (from the look of the current measurements it does not look like it.

Can you provide the current consumption in roomtemp using 32k xtal?

Hi,Christin

We have confirmed that the current converges in a few seconds at room temperature.

The first image is a graph of the operating current at -40°C. The data is only available up to 200 seconds, but we have confirmed that the current converges to the normal standby current by more than 1000 seconds after this.

The operating state is as described in the first post, with the Advertise Interval in basic_ble changed to 5000ms, so the device is probably in standby mode for most of the time.

Thanks for the information.

We will try to run the same setup for both roomtemp and cold temp.

Is the measurement done using TI LaunchPad?

The LP-EM-CC2340R5 is powered by a DC power supply and the current is measured by a current sense amplifier.

Regard.