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EM4005/4105

DescriptionThe EM4005 (previously named H4005) is a CMOS integrated circuit intented 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. The othe...

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SeekIC No. : 004335894 Detail

EM4005/4105: DescriptionThe EM4005 (previously named H4005) is a CMOS integrated circuit intented for use in electronic Read Only RF Transponders. The circuit is powered by an external coil placed in an electrom...

EM4005/4105 Data Sheet

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EM4005/4105
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5000

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Description

The EM4005 (previously named H4005) is a CMOS integrated circuit intented 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. The other coil terminal is affected by the modulator. By turning on and off the modulation current, the chip will send back the 128 bits of information contained in a factory pre-programmed 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. Due to the low power consumption of the logic core, no supply buffer capacitor is required. Only an external coil is needed to obtain the chip function. A parallel resonance capacitor of 75 pF is also integrated.



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