AD Tagreader IC

Fully integrated CMOS transceiver IC

Industry segment: Automotive, Car Access
 

The Avery Dennison Smartrac Tagreader IC 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 the automotive industry.
• Frequency range of 100 – 150 KHz perfectly matches the Avery Dennison Smartrac Automotive transponder portfolio.
• Self diagnostic features are implemented including optional reading of PLL lock frequency to assist in more reliable transponder communication.