nRF52840 chipset Receiver sensitivity limit

RE: nRF52840 chipset Receiver sensitivity limit

Susheel Nuguru — Mon, 06 Jan 2020 08:06:56 GMT

Sorry for the late response Howson.

My phone number is +47 47380710

RE: nRF52840 chipset Receiver sensitivity limit

Howson.Li — Sat, 28 Dec 2019 09:03:37 GMT

Hi Susheel,

The chip test data are as follow:

I will send these chips after get phone number

TKS

RE: nRF52840 chipset Receiver sensitivity limit

Howson.Li — Sat, 28 Dec 2019 08:55:53 GMT

Phone number is required for express delivery, PLS share it

RE: nRF52840 chipset Receiver sensitivity limit

Susheel Nuguru — Mon, 16 Dec 2019 13:43:02 GMT

Sorry for the late response, here are the details

Susheel Nuguru, (Case 240633)

Address: Otto Nielsens veg 12, 7052 Trondheim

Norawy.

Please note that it is holiday season soon here in Norway, so please expect delays in my response. Sorry about that.

RE: nRF52840 chipset Receiver sensitivity limit

Beren.Lei — Thu, 12 Dec 2019 01:43:44 GMT

Hi Susheel,

PLS share your detail address including contact phone No, then we can ship failure chipset to you.

TKS.

RE: nRF52840 chipset Receiver sensitivity limit

Susheel Nuguru — Wed, 11 Dec 2019 12:04:21 GMT

Seems like the chip you have shows lower RX sensitivity than it should be.

Yes, you can send the chip to us so that our expert can do some quick tests on it.

You can ship it to me.

Address: Otto Nielsens veg 12, 7052 Trondheim

Norway

RE: nRF52840 chipset Receiver sensitivity limit

Beren.Lei — Wed, 11 Dec 2019 02:33:44 GMT

Hi Sucheel,

We tested the RX sensitivity in RF conduction with RF cable(not over the air), and we also tested the RX sensitivity in shielding room. So it can't be influenced by the surrounding radio activity. BTW, you can see S8/S2 RX sensitivity of middle/low channel is OK, only high channel is fail. The S8 RX sensitivity of high channel even dropped up to 8dB, can you explain why?

If you also think the surrounding radio activity will influence RX sensitivity, we can ship you our module to you for analysis.

We also need you to provide the distribution of nRF52840 chipset RX sensitivity in production, PLS share it to us.

TKS.

RE: nRF52840 chipset Receiver sensitivity limit

Susheel Nuguru — Mon, 09 Dec 2019 07:39:42 GMT

Hi Baren,,

We do not have any known issues in RX sensitivity in the above mentioned chips. So the actual RX sensitivity should be in the range mentioned in the spec.

But it would be interested to know the antenna specifications you are using. It would also be important to note that the RX sensitivity is greatly influenced by the surrounding radio activity. If there is a lot of radio activity around the test environment in the 2.4GHz band, then the RX sensitivity could affected due to reception of corrupted packets.