EM4097
READ/WRITE ANALOG FRONT END IC WITH SERIAL μC INTERFACE FOR USAGE IN 125 / 134.2 KHZ RFID BASESTATION APPLICATIONS
Description
The EM4097 (previously named P4097) chip is a CMOS integrated transceiver circuit intended for use in an RFID basestation to perform the following functions:
Antenna driving with carrier frequency to transfer energy to the transponder
Data transfer to writable transponder by amplitude modulation (ASK) of the field (100% modulation ratio, called OOK, “on”-“off” keying)
Data transfer from transponder by amplitude- or phase demodulation (ASK or PSK)
μC Interface to communicate with a microprocessor
Features
- Integrated PLL system to achieve self adaptive carrier frequency to antenna resonant frequency I Chip can be forced to run with external clock, division ratio 32
- 100kHz to 150kHz carrier frequency range
- Direct antenna driving using bridge driver
- Data transmission by OOK (100% Amplitude Modulation) using bridge driver
- Multiple transponder protocol compatibility, (Ex.: EM4102, EM4200, EM4450 and EM4205/EM4305)
- Two sampling points for demodulation, allowing extended system tolerances
- Serial μC interface for diagnosis and status control
- Very low sleep mode current consumption of 1μA typically
- USB compatible power supply range
- -40 to +85°C automotive temperature range
- Small outline plastic package SO16
Applications
- Animal ID reader
- Hand held Low Frequency reader