R
EM4100
Electrical Characteristics
V
DD
= 1.5V, V
SS
= 0V, f
C1
= 134kHz square wave, T
a
= 25°C
V
C1
= 1.0V with positive peak at V
DD
and negative peak at V
DD
-1V unless otherwise specified
Parameter
Supply Voltage
Rectified Supply Voltage
Coil1 - Coil2 Capacitance
Power Supply Capacitor
Biphase & Manchester
Versions
Supply Current
C2 pad Modulator ON
voltage drop
C1 pad Modulator ON
voltage drop
PSK Version
Supply Current PSK
C2 pad Modulator ON
voltage drop
Note 1)
Note 2)
Symbol Test Conditions
V
DD
V
DDREC
C
res
C
sup
I
DD
V
ONC2
V
ONC1
I
DDPSK
V
ONC2PSK
V
DD
=1.5V
I
VDDC2
=100µA with ref. to V
DD
V
DD
=1.5V
V
DD
=5.0V
V
DD
=5.0V
I
VDDC2
=100µA with ref. to V
DD
I
VDDC2
=1mA with ref. to V
DD
I
VDDC1
=1mA
with ref. to V
DD
V
COIL1
- V
COIL2
= 2.8 VDC
Modulator switch = “ON”
V
coil
=100mVRMS f=10kHz
Min.
1.5
1.5
Typ.
Max.
1)
Units
V
V
74
2)
120
0.63
0.9
2.1
2.1
1.1
2.3
2.3
1.5
1.3
2.8
2.8
pF
pF
µA
V
V
V
0.92
0.3
0.6
2
0.9
µA
V
The maximum voltage is defined by forcing 10mA on COIL1 - COIL2
The tolerance of the resonant capacitor is ± 15% over the whole production.
Optional reduced tolerance on request
On a wafer basis, the tolerance is ± 2%
Timing Characteristics
V
DD
= 1.5V, V
SS
= 0V, f
coil
= 134kHz square wave, T
a
= 25°C
V
C1
= 1.0V with positive peak at V
DD
and negative peak at V
DD
-1V unless otherwise specified
Timings are derived from the field frequency and are specified as a number of RF periods.
Parameter
Read Bit Period
Symbol
T
rdb
Test Conditions
depending on option
Value
64, 32, 16
Units
RF periods
Timing Waveforms
T
OC
COIL1
64, 32 or 16 T
OC
, depending on option
Serial Data Out
BIT n
BIT n+1
BIT n+2
Fig. 4
Copyright © 2004, EM Microelectronic-Marin SA
3
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EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
