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LRI64 Datasheet(PDF) 27 Page - STMicroelectronics |
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LRI64 Datasheet(HTML) 27 Page - STMicroelectronics |
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27 / 38 page ![]() 27/38 LRI64 Table 14. AC Characteristics Note: 1. TA=–20 to 85°C 2. All timing measurements were performed on a reference antenna with the following characteristics: External size: 75mm x 48mm Number of turns: 6 Width of conductor: 1mm Space between 2 conductors: 0.4mm Value of the Tuning Capacitor: 28.5pF (LRI64-W4) Value of the coil: 4.3µH Tuning Frequency: 14.4MHz. Symbol Parameter Test Conditions 1, 2 Min. Typ. Max. Unit fC External RF Signal Frequency 13.553 13.56 13.567 MHz MICARRIER 10% Carrier Modulation Index MI=(A-B)/(A+B) 10 30 % tRFR, tRFF 10% Rise and Fall Time 0 3.0 µs tRFSBL 10% Minimum Pulse Width for Bit 7.1 9.44 µs tJIT Bit Pulse Jitter –2 +2 µs tMINCD Minimum Time from Carrier Generation to First Data From H-field min 0.1 1 ms fSH Subcarrier Frequency High fC/32 423.75 kHz t1 Time for LRI64 Response 4352/fC 313 320.9 322 µs t2 Time between Commands 4224/fC 309 311.5 314 µs tW Programming Time 93297/fC 6.88 ms |
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