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EM4305 is a CMOS integrated circuit intended for use in electronic Read/Write RF transponders. It is suitable for low cost solutions like animal tagging applications. The IC communication protocol is compatible with the EM4469/4569 family.

512 bit EEPROM organised in 16 words of 32 bit
32 bit unique identifier (UID)
32 bit Password read and write protection

Contact us for datasheets or volume orders.
The IC is powered by picking up energy from a continuous 125 kHz magnetic field via an external coil, which together with the integrated capacitor form a resonant circuit. The IC reads out data from its internal EEPROM and sends it out by switching on and off a resistive load in parallel to the coil using a large modulation index. Commands and EEPROM data updates can be executed by 100% AM modulation of the 125 kHz magnetic field.

The EM4305 supports bi-phase and Manchester data encodings. The EM4305 operating modes are stored in the EEPROM configuration word. All EEPROM words can be write-protected by setting protection bits. The IC contains a factory programmed 32 bit unique identifier number (UID).

512 bit EEPROM organised in 16 words of 32 bit
32 bit unique identifier (UID)
32 bit Password read and write protection
ISO 11784 / 11785 Standard Compliant
Lock feature converts EEPROM words in Read Only
Two data encodings: Manchester and Biphase
Multi-purpose data rate: 8, 16, 32, 40 and 64 RF clocks
Reader Talk First feature
Compatible with EM4469/EM4569 communication protocol
100 to 150 kHz frequency range
On-chip rectifier and voltage limiter
No external supply buffer capacitor needed
-40C to +85C temperature range
Very low power consumption
Enlarged bumped pads (200 m x 400 m) for direct connection of coil (EM4305)

Animal Identification according to ISO FDX-B
Pigeon races standard
Waste management standard (BDE)
Access Control
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