SA7121A
AC Operating Conditions
Clocking
Parameter
Symbol Min
Typ
125
64
Max
300
-
Unit
Condition
RF carrier frequency at COIL1,2
fRF
50
32
kHz
Sustained RF from base station
Number of rf carrier cycles per bit NB
Coil Inputs
Parameter
Symbol Min
Typ
Max
Unit
Condition
Negative excursion of COIL1 or
COIL2
VCN
-0.6
-0.65
-0.7
V
V
Peak level referenced to VSS
Unmodulated COIL1 or COIL2
Modulated voltage drop
Modulated voltage drop
VCM
TBD
3.3
3.0
TBD
voltage referenced to VSS
5.5V
=
Unmodulated COIL1 or COIL2
VCM
TBD
TBD
V
voltage referenced to VSS
5.0V
=
Unmodulated COIL1 or COIL2
voltage referenced to VSS
= 2.5 V
Modulated voltage drop
Resonance Capacitor
VCM
TBD 0.875 TBD
V
Measured between COIL1 and
COIL2
CR
170
pF
1)
1)
Note: 1) for a single batch the tolerance is ±3%. From batch to batch the tolerance is ±30%.
TBD - To be determined.
5/10
http://www.sames.co.za
PRELIMINARY
SAMES [ SAMES ]
