EM4094

EM MICROELECTRONIC - MARIN SA Analog Front End Integrated Circuit for 13.56MHz RFID Base Station EM4094 General Description The EM4094 is an analogue front end for 13.56MHz RFID reader systems. It is highly versatile so it can be used in different reader systems having sub carrier frequencies from 212kHz to 848kHz, hence covering ISO14443 and ISO15693 standards. The adaptability is achieved using a 3 wire serial interface to program the system option bits. The EM4094 operating voltage is comprised between 3.3V and 5V. The push-pull transmitter generates 200mW output RF power into a 50 load. The output stage drivers are capable of OOK or ASK modulation from 7% up to 30% of AM modulation. The EM4094 reader chip is available in SO16, TSSOP16, TSSOP20 and SO20 package. Applications  Low cost reader modules  Hand held reader Features  ISO15693 & ISO14443 type A standard compatibility  Optionally ISO14443 type B compliant  3.3V or 5V Power Supply (analogue and digital)  Antenna driver using OOK modulation, single or double antenna drivers  Optionally ASK uplink modulation index adjustable from 7% up to 30%  High output RF power of 200mW from 5V supply  Antenna short circuit protection  Multiple receiver inputs for high communication reliability  848KHz BPSK internal decoder (ISO14443 type B option only)  Multiple sub-carrier receiving compatibility (212kHz, 424kHz and 848kHz)  Multiple sub-carrier coding compatibility (Manchester, Miller, BPSK)  Built-in receive l...