13.56MHZ, COMPLIANT ISO 15693 AND ISO 14443A&B, ANALOG FRONT END IC FOR RFID BASE STATION
The EM4094 is an integrated analog system for 13.56MHz RFID reader system. It is highly versatile so it can be used in different reader systems having sub-carrier frequencies from 212KHz to 848KHz, hence covering ISO 14443 and ISO 15693 standards.
The adaptability is achieved using a 3 wires serial interface to program the system option bits. The transmitter generates 200mW output power into 50 Ohms load and is capable of OOK or ASK modulation.
EM4094 Solutions:
Low Cost reader solution
Hand held reader
EM4094 Features:
ISO15693 and ISO14443 compatibility
Oscillator using 13.56MHz Quartz with selectable transconductance.
Antenna driver using OOK or ASK modulation using single antenna driver
ASK modulation adjustable in range from 7% to 30%
High output power 200mW from 5V supply
Antenna short circuit protection
Multiple receiver input for high communication reliability
AM/PM demodulation with AGC signal amplifier
848KHz BPSK internal decoder (type B)
Multiple sub-carrier receiving compatibility (212kHz, 424kHz and 848kHz)
Multiple sub-carrier coding compatibility (Manchester, BPSK)
Built-in receive low-pass filter cut-off frequency selectable between 400kHz and 1MHz
Built-in receive high-pass filter cut-off frequency selectable between 100kHz, 200kHz and 300kHz
Selectable receive gain
Serial 3 pin interface for option selection
Power down mode controlled by the 3 wires SPI
Output Power: 100mW (in SO16), 200mW (in SO20)
Operation temperature range -40°C to +85°C |
