EM4097 - EM Microelectronic

EM4097 READ/WRITE ANALOG FRONT-END

The EM4097 (previously named P4097) chip is a CMOS integrated transceiver circuit intended for use in an RFID basestation to perform the following functions:  Antenna driving with carrier frequency to transfer energy to the transponder  Data transfer to writable transponder by amplitude modulation (ASK) of the field (100% modulation ratio, called OOK, “on”.

Features

 Integrated PLL system to achieve self adaptive carrier frequency to antenna resonant frequency
 Chip can be forced to run with external clock, division ratio 32
 100kHz to 150kHz carrier frequency range Read/Write Mode using internal PLL signal
 Direct antenna driving using bridge driver
 Data transmission by OOK (100% Amplitude Modulation) using bridge driver
 Multiple transponder protocol compatibility, (Ex.: EM4102, EM4200, EM4450 and EM4205/EM4305)
 Two sampling points for demodulation, allowing extended system tolerances
 Serial µC interface for diagnosis and status c.