The LoRa Developer Forum is now in read-only mode and new content will not be added.
Semtech, in its commitment to enhance user experience and streamline content, has successfully integrated the LoRa Developer Portal content into Semtech.com. As a result of this consolidation effort, the LoRa® Developer Portal Forum will be discontinued on May 1st. After this date, you will be automatically redirected to Semtech.com.
For any technical support related to LoRa, please feel free to reach out to our experts here. If you have sales inquiries, please contact us here.

FORUM

Sx1280

Semtech Transceivers SX128x family
#1

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

#2

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 ?

#3

I use SX1280 chip itself

#4

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

1 Like
#5

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.