Hello everyone, I am a beginner. I have a small project with sx1280. I searched datasheet of sx1280 but I cant find RFIO output impedance of the SX1280. How can I find it??
Thank you very much

Are you using the SX1280 chip itself, and adding your own antenna matching, or are you using a module that has the SX1280 and antenna matching components already on it ?

I use SX1280 chip itself

Well, you will need to wait for Semtech to comment on what the impedance of the actual chip is.

1 Like

The LoRa Connect SX1280 Development Kit uses a radio front-end design which matches the SX1280 chip’s output to 50 ohms at the antenna. See the production folder for the reference design schematic and BOM.