Module Operating Frequencies; Electrical, Reliability And Radio Characteristics; Absolute Maximum Ratings; Operating Temperatures - SIM Tech SIM900D HD Manual

SIM900D Hardware Design

4.3 Module Operating Frequencies

Table26: SIM900D operating frequencies
Frequency
GSM850
EGSM900
DCS1800
PCS1900

5 Electrical, Reliability and Radio Characteristics

5.1 Absolute Maximum Ratings

The absolute maximum ratings stated in Table 27 are stress ratings under non-operating conditions. Stresses
beyond any of these limits will cause permanent damage to SIM900D.
Table27: Absolute maximum ratings
Parameter
VBAT
Peak current of power supply
Voltage at digit pins*
I *
I
I *
O
*For digital interface pins, such as GPIO, UART, LCD and PWM.

5.2 Operating Temperatures

The operating temperature is listed in following table:
Table28: SIM900D operating temperature
Parameter
Ambient temperature
Restricted operation*
Storage temperature
* The SIM900D does work, but deviations from the GSM specification may occur.
SIM900D_HD_V1.02
Receive
869 ～ 894MHz
925 ～ 960MHz
1805 ～ 1880MHz
1930 ～ 1990MHz
Min Max
- 5.5
0 3.0
-0.3 3.1
- 10
- 10
Min Typ
-30 +25
-40 to -30
-45
51
Transmit
824 ～ 849 MHz
880 ～ 915MHz
1710 ～ 1785MHz
1850 ～ 1910MHz
Unit
V
A
V
mA
mA
Max Unit
+80 ℃
+80 to+ 85 ℃
+90
℃
09.04.2010