MFRC522 - TX1 and TX2 Impedance Matching

[spanda]

Hi guys,

I am designing a RFID Module using MFRC522 chip. So while designing the layout of the board, I wanted to confirm the impedance matching to be performed on TX1 and Tx2 lines . I want my Rmatch to be 50 Ohms. Then do I need both TX1 and Tx2 traces to be 50 Ohms single endedly or should the differential impedance between them be 50 ? I think it is differential but still I would like it confirmed.

Best,

Soumya

[IvanRuiz]

Hello,

As mentioned in the case, the matching has to be done for the antenna values, and  the distances between components in the matching circuit shall be as short as possible.

Regards,

Ivan.