R
EM4102
Electrical Characteristics
VDD = 1.5V, VSS = 0V,
fC1 = 134kHz square wave, Ta = 25°C
VC1 = 1.0V with positive peak at VDD and negative peak at VDD -1V unless otherwise specified
Parameter
Supply Voltage
Symbol Test Conditions
Min.
1.5
Typ.
Max.
1)
Units
V
VDD
Rectified Supply Voltage
Coil1 - Coil2 Capacitance
Power Supply Capacitor
VDDREC
Cres
VCOIL1 - VCOIL2 = 2.8 VDC
Modulator switch = “ON”
Vcoil=100mVRMS f=10kHz
1.5
V
78 2)
125
pF
pF
Csup
Manchester and biphase
versions
Supply Current
IDD
0.6
1.5
µA
C2 pad Modulator ON
voltage drop
VONC2
VDD=5.0V IVDDC2=1mA
with ref. to VDD
150
500
220
280
mV
PSK version
Supply Current
IDDPSK
0.9
2.0
µA
C2 pad Modulator ON
voltage drop
VONC2PSK VDD=5.0V IVDDC2=100µA
with ref. to VDD
650
800
mV
Note 1) The maximum voltage is defined by forcing 10mA on COIL1 - COIL2
Note 2) The tolerance of the resonant capacitor is ± 15% over the whole production.
On a wafer basis, the tolerance is ± 2%
Timing Characteristics
VDD = 1.5V, VSS = 0V, fcoil = 134kHz square wave, Ta = 25°C
VC1 = 1.0V with positive peak at VDD and negative peak at VDD -1V unless otherwise specified
Timings are derived from the field frequency and are specified as a number of RF periods.
Parameter
Symbol
Test Conditions
Value
Units
Read Bit Period
Trdb
depending on option
64, 32, 16
RF periods
Timing Waveforms
TOC
64, 32 or 16 TOC, depending on option
COIL1
BIT n
BIT n+1
BIT n+2
Serial Data Out
Fig. 4
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3
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