The EM4100 (previously named H4100) is a CMOS
integrated circuit for use in electronic Read Only RF
Transponders. The circuit is powered by an external coil
placed in an electromagnetic field, and gets its master
clock from the same field via one of the coil terminals. By
turning on and off the modulation current, the chip will send
back the 64 bits of information contained in a factor y preprogrammed
memory array.
The programming of the chip is performed by laser fusing
of polysilicon links in order to store a unique code on each
chip.

Features
□ 64 bit memory array laser programmable
□ Several options of data rate and coding available
□ On chip resonance capacitor
□ On chip supply buffer capacitor
□ On chip voltage limiter
□ Full wave rectifier on chip
□ Large modulation depth due to a low impedance
modulation device
□ Operating frequency 100 – 150 kHz
□ Very small chip size convenient for implantation
□ Very low power consumption
Applications
□ Logistics automation
□ Anticounterfeiting
□ Access control
□ Industrial transponder

EM4100 DATASHEET

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