R
EM4150
EM4350
Absolute Maximum Ratings
Parameter
Handling Procedures
This device has built-in protection against high static
voltages or electric fields; however, anti-static
precautions should be taken as for any other CMOS
component.
Symbol
Conditions
Maximum AC peak current
induced on COIL1 and COIL2
ICOIL
± 30 mA
Power Supply
VDD
Vmax
Vmin
-0.3 to 6.0V
VDD + 0.3V
VSS – 0.3V
-55 to °125°C
1000V
Unless otherwise specified, proper operation can only
occur when all terminal voltages are kept within the
supply voltage range.
Maximum voltage other pads
Minimum voltage other pads
Storage temperature
Tstore
VESD
Operating Conditions
Parameter
Symbol
Min
Typ
Max
Units
Electrostatic discharge
maximum to MIL-STD-883C
method 3015
Operating
Top
-40
+85
°C
temperature
Maximum coil
current
ICOIL
Vcoil
fcoil
10
mA
Vpp
kHz
Stresses above these listed maximum ratings may cause
permanent damage to the device. Exposure beyond
specified operating conditions may affect device reliability
or cause malfunction.
AC Voltage on
coil
1)
Supply frequency
100
150
Note 1): Maximum voltage is defined by forcing 10mA on Coil1-
Coil2
Tranceiver
Transponder
Data to be sent
to transponder
Modulator
Coil1
Antenna
Oscillator
Driver
EM4150
Coil2
Filter
and
Demodulator
Gain
Data received
from transponder
Data decoder
READ MODE
RECEIVE MODE
Signal on
Transponder coil
Signal on
Transceiver coil
Signal on
Transceiver coil
Signal on
Transponder coil
RF Carrier
Data
RF Carrier
Data
Fig. 3
2
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