SimCom T900 - 7 Electrical, Reliability and Radio Characteristics; Absolute Maximum Ratings; Recommended Operating Conditions; Electro-Static Discharge

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T900_User Guide_V1.02 25 2013-05-22
7 Electrical, Reliability and Radio Characteristics
7.1 Absolute Maximum Ratings
The absolute maximum ratings stated in following table are stress ratings under non-operating conditions. Stresses
beyond any of these limits will cause permanent damage to T900.
Table 15: Absolute maximum ratings
Symbol Parameter Min Typ Max Unit
VBAT Power supply voltage 4.5 - 42 V
V
I
*
Input voltage -0.3 - 3.1 V
I
I
*
Input current - - 10 mA
I
O
*
Output current - - 10 mA
*
These parameters are for digital interface pins, such as GPIO, UART and DEBUG.
7.2 Recommended Operating Conditions
Table 16: Recommended operating conditions
Symbol Parameter Min Typ Max Unit
VBAT Power supply voltage 5 12 30 V
T
OPER
Operating temperature -40 +25 +85 ℃
T
STG
Storage temperature -45 +90 ℃
7.3 Electro-Static Discharge
T900 is an ESD sensitive component, so more attention should be paid to the procedure of handling and
packaging. The ESD test results are shown in the following table.
Table 17: The ESD characteristics (Temperature: 25 , Humidity
℃ : 45 %)
Test item Contact discharge Air discharge
Shell ±10KV ±15KV
RF interface ±10KV ±15KV
RS232 interface ±10KV ±15KV
Audio interface ±10KV ±15KV
SIM card holder ±10KV ±15KV