Description
EM4200 is a CMOS integrated circuit intended for use in electronic Read Only RF transponders. It is designed to replace directly the EM Microelectronic-Marin Read Only ICs EM4100/4102 and EM4005/4105. Comparing to EM4100/4102 and EM4005/4105, the chip provides higher reading range performances and presents on its coil terminals bigger resonant capacitor (210pF and 250pF selectable by mask option). The 128 bit unique code is stored in laser programmed ROM. Several options are available to use 64, 96 or 128 bits of ROM.
The circuit is powered by an external coil placed in an electromagnetic field and gets its master clock from the same field. By turning on and off the modulation current, the chip will send back the unique code contained in a factory pre-programmed laser ROM.
Features
> Full compatible with EM4100/4102 and
EM4005/4105 communication protocols.
> 64 bit laser programmed ROM (128 and 96 bit option available)
> Several options of data rate and data encoding:
> Manchester 32 and 64 RF clocks per bit
> Biphase 32 and 64 RF clocks per bit
> PSK 16 RF clocks per bit (subcarrier RF/2)
> FSK2 50RF clocks per bit
> Several resonant capacitor integrated on chip
(0pF, 75pF, 210pF or 250pF mask option)
> 100 to 150 kHz frequency range
> On-chip rectifier and voltage limiter
> No external supply buffer capacitor needed
> -40°C to +85°C temperature range
> Very low power consumption and High performances RFID CARD
Applications
> Animal Identification according to ISO11785 (FDX-B)
> Waste management standard (BDE)
> Access Control
> Logistics automation
> Anticounterfeiting
> Industrial transponder

The technology rfid inlay has the advantage of information exchange do not need to have any contact between card and card reader. Card storage capacity generally between 256 b and 72 KB, at present the most popular technology of Legic,, Mifare Desfire, iCode and HID class and so on, also follow ISO14443 kathi Jones from A&B communication protocol chip. Usually used for access control to collect fees, bus, subway, etc. Contactless IC card chip produced by PHILIPS company used by the Mifare one S50 S70 or chips, about 80%, so a lot of people traditionally called contactless IC card "M1 card".