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LRI512 数据表(PDF) 46 Page - STMicroelectronics |
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LRI512 数据表(HTML) 46 Page - STMicroelectronics |
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46 / 54 page ![]() LRI512 46/54 Figure 44. LRI512 Synchronous Timing, Transmit and Receive Figure 44 shows an ASK modulated signal, from the VCD to the LRI512. The test condition for the AC/DC parameters are: – Close coupling condition with tester antenna (1mm) – Gives LRI512 performance on tag antenna Table 58. DC Characteristics AI06680 AB tRFF tRFR tRFSBL tMAX tMIN CD fCC Symbol Parameter Test Condition (in addition to those in Table 57) Min. Typ. Max. Unit VCC Regulated Voltage 1.5 3.0 V VRET Retromodulated Induced Voltage A1T/ISOR ISO10373-7 10 mV A1S/ISOR ISO10373-7 10 mV A2T/ISOK ISO10373-7 10 mV C40 ISO10373-7 10 mV ICC Supply Current (Active in Read) Vcc = 3.0V 150 µA ICC Supply Current (Active in Write) Vcc = 3.0V 400 µA CTUN Internal Tuning Capacitor f=13.56Mhz for W4/22 18.5 pF CTUN Internal Tuning Capacitor f=13.56Mhz for W4/30 26 pF |
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