EM4025 Description

FCC ID: JE4KCLP

Operational Description

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FCCID_280026

EM MICROELECTRONIC - MARIN SA EM4025 EM4125 Read Only Contactless Identification Device with Anticollision Features Description • Anticollision protocol to identify a number of The EM4025 is a CMOS integrated circuit for use in transponders (better then 20 tags/s at RF/32, 10 electronic Read Only RF Transponders, often tags/s at RF/64) known as a RFID Tag. The circuit is powered by an • 55 bit memory array, laser programmable ROM external coil placed in an electromagnetic field, and • Two mask programmable data rate options: gets its clock via the coil terminals. The fixed code RF/64 and RF/32 device identification is programmed at manufacture • Data transmission reader to transponder: ASK by laser fusing of polysilicon links. The chip starts 100% (OOK) at power up in a quiet mode. Downlink • Data transmission transponder to reader: ASK, Transmission occurs only on command from the Manchester Code reader, normally as part of the • On chip resonance capacitor anticollision/arbitration scheme. A data rate of 64 or • On chip supply buffer capacitor & voltage limiter 32 periods of the carrier frequency per data bit is available. Downlink Data is Manchester Coded. • Large Modulation Depth Only an external coil is needed to obtain the chip • Operating frequency 100 – 150 kHz function. A parallel resonant capacitor is integrated. • Small chip size convenient for implantation The EM4125 is the same device but with large Typical Applications bumps (Mega Pads) as indicated on the last page of this data sheet. All specified parameters and • Logistics description are applicable for the EM4125 device • Manufacturing Automation except resonant capacitor. • Anti-counterfeiting • Industrial transponder • Tracking and tracing Typical Operating Configuration COIL1 L EM4025 COIL2 L: typical 20.78 mH value for fO = 125 KHz Fig. 1 Copyright  2002, EM Microelectronic-Marin SA 1 www.emmicroelectronic.com


Document Created: 2002-06-24 08:39:43
Document Modified: 2002-06-24 08:39:43
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