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? 

[Gagan Gopal]

I could not find the Development Kit you guys have mentioned. Also is this the circuit diagram RK mentioned? I have inserted the image. 

[Gagan Gopal]

Does the supply refer to the battery? And what is the VDDH and VDD? I could not find or understand what these are when I searched them up. 

[awneil]

Gagan Gopal said:

what is the VDDH and VDD

They are described in the Product Specification of the nRF52840

[Gagan Gopal]

Does the supply refer to the battery?

[Gagan Gopal]

Can someone please answer this question?

[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