Low Frequency 125KHz EM4305 RFID Tags

The EM4305 chip is a CMOS microcircuit intended to be used in electronic ReadM/rite RF transponders. EM4305 RFID Tags are suitable for low-cost solutions like animal tagging applications.

The IC is powered by learning energy from endless 125 kHz magnetic flux via an external coil, which alongside the integrated capacitor form a resonator The IC reads out data from its internal EEPROM and sends It out by switching on and off a resasüve load in parallel to the coil employing a large modulation index Commands and EEPROM data updates are often executed by 100% AM modulation of the 125 kHz magnetic flux.

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