Hi. I want to design board with a chip QM35825. But I can’t find the full technical datasheet on the website, only “product brief”. Where reference application, a summary of technical specifications? PCB example? How to program it?
This looks like the datasheet to me:
https://au.mouser.com/pdfDocs/qorvo-qm35825-ds.pdf
Oh, thanks. It will be easier now. And where is the user manual for QM35825? Or has it not been created yet because it’s a new chip (SoC)? I found information about the QM3 SDK. How to work with the chip isn’t there.
The previous chip DW1000 had a large user manual https://www.qorvo.com/products/d/da007967. I think it will be the same for the new chip.
Sorry, I can’t be any more help to you.
I’m just a newbie here and saw your unanswered query, so did a Google search to find the datasheet. You’d need to ask Qorvo about further information.
@Sokar, please contact your local sales representative for more information on the QM35825: How to buy,support & guidance - Qorvo
As an alternative, many of the documentation for the DW3000 and QM33 are publicly available. You can consider using these products unless there is a feature from the QM35 which is not available on the DW3000/QM33.
Thank you for your message. I will try to contact Qorvo. I saw that the new SoC promises an accuracy of 5 cm, and would like to create a module with this level of precision. Previously, I worked with the BU01 module from Ai-Thinker (https://en.ai-thinker.com/) which does not have a remote antenna and has an actual accuracy of 15-25 cm, not 10 cm.
Hi,
I have gone through the three variants from Qorvo — DW1000, DWM1000, and QM35825.
I would like to understand the QM35825 SoC better. Could you please confirm whether it has a built-in MCU? Also, is there any stack available for firmware portability and development access?
Additionally, is this SoC designed for tag or anchor use?
Please let me know development access on this SOC? Does Qorvo released the full access to the user for making their own product? please support.
Regards,
Kumar
Hi. Unfortunately, I haven’t yet received the necessary documents and my requests haven’t been answered. I wrote saying that I was ready to sign an NDA, but Robert and Maxime have not responded. 
The QM35825 integrates a UWB transceiver together with an embedded MCU. However, Qorvo currently does not provide full low-level access to that MCU for independent firmware development.
At present, development requires flashing Qorvo-supplied precompiled firmware binaries. The internal MCU is therefore not openly programmable in the way developers might expect from a typical SoC. This limits the ability to implement custom MAC/PHY behavior, timing optimizations, or fully proprietary stacks.
In addition, detailed technical information and development access are typically routed through sales channels rather than being openly documented. For many engineers and smaller teams, this makes evaluation and independent product development more difficult than it needs to be.
From a system architecture perspective, this often means:
- You remain dependent on Qorvo’s firmware stack.
- Deep customization is not possible. See: QM35825 Application development
- An additional external application processor may still be required for full system control.
Frankly, this is frustrating, because the closed firmware model prevents developers from fully leveraging what is otherwise a very capable SoC.
Broader firmware access and clearer public documentation would greatly improve its attractiveness for advanced developers.
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