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sshafer · 2024-02-08

Hi,I am designing an NFC transmitter that uses ST25R3916B-AQWT. The coil will be connected to the RFO1/2 pins. In order to design the coil properly, I will need to know the driver's impedance spec for the various d_res<3:0> multiplier values (Table ...

sshafer · 2024-02-16

Hi, Any update on this front?Again, we are just looking for the imaginary load (inductive/capactive, phase) spec of ST25R3916B-AQWT's antenna driver (RFO1/2 pins).Both the Application Note you sent and the datasheet for the IC only state Zrfo = 2 Ω....

sshafer · 2024-02-12

Hi Ulysses, Thanks for your reply. The document AN5276 is helpful for designing our antenna. However, the document still doesn't actually present the values or measurement strategy for characterizing the driver itself. Since we need to match for th...

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Imaginary Load of ST25R3916B Drivers

Re: Imaginary Load of ST25R3916B Drivers

Re: Imaginary Load of ST25R3916B Drivers