nRF52840 connection with power souce/battery

[Gagan Gopal]

Hello,

I was looking into the nRF5280 and was going to purchase it. But I had some questions that were not cleared up in the data sheets. It seems that a battery or a power source is not included in the nRF5280. I was wondering how I could connect a battery to the Bluetooth module (ISP1807) such as a single coin cell like 2032 as you mentioned. Is there a circuit diagram that depicts how to connect the ISP1807 to the battery?

[RK]

The nRF52840 is just a chip, so of course it doesn't have a power source, you need to add all the external components required, including power, to use it, there are example circuits in the documentation. Then you talk about ISP1807 which is a module which contains the nRF52840 plus some external components like antenna and crystals, and of course that doesn't have a power supply either. However Insight (who make the ISP1807) have a development kit which you can use to develop your own circuits and they have schematics and gerbers showing how that development board is designed. Not sure what else you're looking for here. 

[Gagan Gopal]

Thank you for answering my questions. Oh okay, I see. I could not find any example circuits in the documentation that included power. Oh okay is it possible to make a circuit that connects a power source or battery such as a lithium coin cell to the ISP1807? 

[awneil]

Gagan Gopal said:

Does the supply refer to the battery?

The chip neither knows nor case what is the source of the power.

The Product Specification gives the requirements of the supply 

[Gagan Gopal]

How can I connect a battery to the nRF5280 or a bluethooth module? I can not find this in the product specifications.

[Gagan Gopal]

It said a USB powers the chip. It calls it the Vbus does not make sense to me.

[awneil]

Again, the Product Specification tells you what the chip requires.

It is up to you to design a suitable means to satisfy those requirements.

If you are not able to do this design, then you need to hire someone who can.

Or purchase a ready-made product; eg, https://shop.ruuvi.com/product/ruuvitag-1-pack/

[Kaja]

Hi Gagan, 

here you have the HW files for the nRF52840 DK, there you find examples of powering the chip with USB and coin battery: 
nRF52840 Development Kit - Hardware files 1_0_0.zip

The product specification can be found in our infocenter. 

Example for the module, you have to have a look at the DK's from the module vendor. 

Best regards,
Kaja