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PN7462/PN5180 RSSI Measurements

Question asked by Jonathan Bechtold on Apr 1, 2019
Latest reply on May 7, 2019 by Jonathan Iglesias



For an NFC application we are developing, we would like to extract some path loss information from the channel between the reader and the tag. In particular, we would like to be able to modify the transmitter power levels during transmission and extract the received signal strength when receiving.


During my search for NFC transceivers, I came across the PN7462 NFC mcu and the PN5180 NFC frontend that both possess the AN11742 Dynamic Power Control (DPC) feature by which the transmitter field strength can be modified. However, what I was not able to find was the possibility of measuring the received signal strength. Is there any way of extracting the RSSI? Might there be another chip more suitable for our requirements?


Given that there is a possibility of extracting the RSSI, we were considering using the OM25180FDK development kit for our first tests, but any other suggestions are very welcome.


Looking forward to hearing from you.


Best Regards,