SIM340 Hardware Design
5 Electrical, reliability and radio characteristics
5.1 Absolute maximum ratings
Absolute maximum rating for power supply and voltage on digital and analog pins of SIM340 are
listed in following table:
Table
27
: Absolute maximum ratings
Parameter
Min
Max
Unit
Peak current of power supply
0
3.0
A
RMS current of power supply (during one TDMA- frame)
0
0.7
A
Voltage at digit pins
-0.3
3.3
V
Voltage at analog pins
-0.3
3.0
V
Voltage at digit/analog pins in POWER DOWN mode
-0.25
0.25
V
5.2 Operating temperatures
The operating temperature is listed in following table:
Table
28
: SIM340 operating temperature
Parameter
Min
Typ
Max
Unit
Ambient temperature
-20
25
60
℃
Restricted operation*
-30 to -20
60 to 80
℃
Storage temperature
-40
85
℃
* SIM340 does work, but deviations from the GSM specification may occur, For example, the
frequency error or the phase error will be large.
SIM340_HD_V3.09
18.03.2009
55
