SR176_07 Datasheet, PDF (30/35 Pages) STMicroelectronics – 13.56 MHz, 176-bit short range contactless user EEPROM with 64-bit Unique ID

Package mechanical
Figure 47. A4 antenna specification
A A1
B
B1
SR176
Table 10. A4 antenna specification
Symbol
Parameter
A Coil width
B Coil length
A1 Inlay width
B1
Q
F_NOM
Inlay length
Overall thickness of copper antenna coil
Silicon thickness
Unloaded Q value
Unloaded free-air resonance
P_A H-field energy for device operation
AI07696B
Type
15
15
19
19
110
180
30
14.5
Min
14.5
14.5
18.5
18.5
90
165
1.5
123.5
Max
Unit
15.5
mm
15.5
mm
19.5
mm
19.5
mm
130
µm
195
µm
MHz
A/m
dbµA/m
30/35