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EM4450A5CI2LB 参数 Datasheet PDF下载

EM4450A5CI2LB图片预览
型号: EM4450A5CI2LB
PDF下载: 下载PDF文件 查看货源
内容描述: 1千位读/写非接触式识别装置 [1 KBit Read/Write Contactless Identification Device]
分类和应用: 装置
文件页数/大小: 16 页 / 234 K
品牌: EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
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EM4450
EM4550
Block Diagram
Modulator
Encoder
ROM
EEPROM
+V
coil2
coil1
C
r
AC/DC
converter
Voltage
Regulator
C
s
Pow er
Control
Reset
Write Enable
Clock
Extractor
Data
Extractor
Sequencer
Command
Decoder
Control
Logic
Fig. 2
System Principle
Transceiver
Data to be sent
to transponder
Modulator
Transponder
Oscillator
Antenna
Driver
Coil 1
EM4450
Data
Decoder
Filter &
Gain
Demodulator
Coil 2
Data received
from
transponder
RECEIVE M ODE
Signal on
Transponder coil
READ M ODE
Signal on
Transceiver coil
Signal on
Transceiver coil
Signal on
Transponder coil
RF Carrier
Data
RF Carrier
Data
Fig. 3
Copyright
2003, EM Microelectronic-Marin SA
2
www.emmicroelectronic.com