EM4200
The EM Microelectronic EM4200 is an LF 125 kHz RFID tag IC, with 128 bit laser programmed ROM (64 and 96 bit option available), operating at 100 to 150 kHz, under EM4100/4102 and EM4005/4105 compatible ISO11785 (FDX-B).
Read-only 128-bit, replaces EM4100/4102
Full Specifications
| Manufacturer | EM Microelectronic |
|---|---|
| Frequency Category | LF 125 kHz |
| Frequency | 100 to 150 kHz |
| Protocol | EM4100/4102 and EM4005/4105 compatible, ISO11785 (FDX-B) |
| Memory | 128 bit laser programmed ROM (64 and 96 bit option available) |
| Interface | RF (contactless) |
| Temperature Range | -40°C to +85°C |
| Form Factor | EMDFN-02 package, sawn wafer, bumped die (blister tape) |
| Security | Read-only, factory laser programmed |
Engineering Brief
The EM4200 is a read-only low-frequency (100-150 kHz) RFID chip with 128-bit laser-programmed ROM, designed as a direct replacement for EM4100/4102 and EM4005/4105. It features integrated resonant capacitors (0pF, 75pF, or 250pF options), on-chip rectifier and voltage limiter, and requires no external supply buffer capacitor. Multiple data encoding options are available: Manchester (32/64 RF clocks per bit), Biphase (32/64 RF clocks per bit), PSK (16 RF clocks per bit with RF/2 subcarrier), and FSK2 (50 RF clocks per bit), making it suitable for diverse applications including ISO11785 FDX-B animal identification and access control systems.
Typical Applications
Standards & Compliance
Frequently Asked Questions
What is the EM4200 RFID chip and what frequency does it operate at?
The EM4200 is a read-only low-frequency RFID chip operating at 100-150 kHz (typically 125 kHz). It contains 128-bit laser-programmed ROM and serves as a direct replacement for EM4100/4102 and EM4005/4105 chips.
How much memory does the EM4200 have?
The EM4200 has 128 bits of laser-programmed ROM as standard, with 64-bit and 96-bit options also available. The memory is factory programmed and read-only, meaning it cannot be rewritten after manufacturing.
Is the EM4200 compatible with EM4100 readers?
Yes, the EM4200 is fully compatible with EM4100/4102 and EM4005/4105 protocols, making it a drop-in replacement that works with existing reader infrastructure designed for these legacy chips.
Does the EM4200 support ISO11785 for animal identification?
Yes, the EM4200 supports ISO11785 FDX-B protocol, making it suitable for animal identification applications. It offers multiple data encoding options including PSK and FSK2 formats required for animal tracking systems.
What encoding formats does the EM4200 support?
The EM4200 supports multiple data encoding formats: Manchester (32/64 RF clocks per bit), Biphase (32/64 RF clocks per bit), PSK (16 RF clocks per bit with RF/2 subcarrier), and FSK2 (50 RF clocks per bit).
Does the EM4200 require external capacitors?
The EM4200 integrates resonant capacitors (0pF, 75pF, or 250pF options) and includes an on-chip rectifier and voltage limiter, eliminating the need for an external supply buffer capacitor in most applications.
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