RFID

来自Jack's Lab
2016年11月12日 (六) 12:28Comcat (讨论 | 贡献)的版本

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目录

1 Overview



2 Chip

2.1 EM4095

Use in an RFID basestation to perform the following functions:

- antenna driving with carrier frequency - AM modulation of the field for writable transponder - AM demodulation of the antenna signal modulation induced by the transponder communicate with a microprocessor via simple interface.

Features:

  • Integrated PLL system to achieve self adaptive carrier frequency to antenna resonant frequency
  • No external quartz required
  • 100 to 150 kHz carrier frequency range
  • Multiple transponder protocol compatibility (e.g. EM400X, EM4050, EM4150, EM4070, EM4170, EM4069)
  • Sleep mode 1µA
  • USB compatible power supply range
  • Small outline plastic package SO16 or PSOP2 16


http://www.emmicroelectronic.com/products/rf-identification-security/rf-reader-ics/em4095



2.2 MFRC522



3 Antenna




4 Reference

























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