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RFID IC finds the cows

Posted: 08 Mar 2005 ?? ?Print Version ?Bookmark and Share

Keywords:em microelectronic? em4569? cmos rfid ic?

EM Microelectronic announced the EM4569, a 125kHz, 512bit contactless identification CMOS RFID IC intended for use in electronic read/write RF transponders. The EM4569 offers several data rate and data encoding options available at a decreased level of power consumption. This passive RFID chip is optimized for high-performance, cost savings, and increased reading distance, making it well suited for animal identification.

The device is the enlarged pad version of the company's EM4469. The enlarged pads allow for direct antenna connection via bumps deposited on the enlarged pads, so it is possible to directly solder the wire of the antenna on the EM4569 without printed circuit board (PCB) support.

The IC has demonstrated performance in long range detection. "In a recent field trial using long-range animal readers, the EM4569 embedded in an ear-tag format was read at a distance of up to one meter, considerably more than other conventional RFID tags," explains Mougahed Darwish, president of the management board of EM Microelectronic. The device is compliant with ISO 11784/5 and has bi-phase RF/32.

Key features of the EM4469 include a 512bit EEPROM organized in 16 words of 32 bits; 32bit password read/write protection; 32bit unique identification number (UID); 10bit customer code; multi-purpose encoding (Manchester, Biphase, Miller, PSK, FSK); multi-purpose data rate from 1k baud up to 32k baud; and on-chip rectifier and voltage limiter. Additionally, the device does not need an external supply buffer capacitor.

Rated for operation between the -40C and 85C temperature range, the EM4569 is priced at 50 cents each in die form in 10,000-piece quantities.

- Janine Love

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