Data Sheet

SM-MFAD4-C02 Datasheet
- 12 -
Revision 2.3 Apr. 2022
3.3 Antenna Specifications
Antenna specifications for this module have been modeled using a two-layer test board.
Table 3 Antenna Specifications
Item
Value
Unit
Note
Min
Typ
Max
DC
Resistance
0.5
1
2
Ω
AC
Impedance
50
Ω
Frequency
13.06
13.56
14.06
MHz
Q factor
25
30
35
Antenna
Type
FR4 Loop Coil
Add the Ferrite
sheet
Size
(25 ±0.2) X (25±0.15)
mm
3.4 Power Consumption
Table 4 Current Consumption
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
I
HPD
Hard power down current
V
BAT
=3.6V,
V
EN
=0V
-
10
14
μA
I
STBY
Standby state current
V
BAT
=3.6V
-
20
μA
I
ACT
Active state current
V
BAT
=3.6V
-
4.55
-
mA
I
TVDD
Transmitter supply current
V
BAT
=3.0V
-
-
190
mA
*Active state : Idle and Listenser modes.
3.5 Thermal Protection
Table 5 Thermal Protection
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
T
OVERTEMP
Temperature
protection trigger
120
125
130
0
C