The TagReader base station IC is a fully integrated CMOS transceiver IC minimising the influence on reading/writing distances caused by the given tolerances of the primary resonance circuit.
It is intended for use in an automotive immobilizer RFID base station with the
following functions:
- Antenna driving with carrier frequency by internal PLL, or external clock.
- Integrated PLL system to achieve self adaptive carrier frequency matched to
the antenna resonant frequency.
- 100% AM modulation (OOK) of the field for writable transponders.
- AM demodulation of the antenna signal modulation induced by the
transponder modulation.
- Two sampling points for demodulation to avoid the “Zero crossing” effect.
- Communication with the microcontroller via a 3 wire interface.
- Only a few external components are needed to ensure a very cost efficient
and reliable solution for the ever increasing demands of automotive
industry.
- Frequency range of 100 – 150 KHz perfectly matches the SOKYMAT
AUTOMOTIVE transponder portfolio.
- Self diagnostic features are implemented including optional reading of
PLL lock frequency to assist in more reliable transponder communication.
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