Shanghai SIMCom Wireless Solutions Limited SIM7000A ユーザーズマニュアル
Smart Machine Smart Decision
SIM7000 _Hardware Design _V1.00
2017-05-23
Input Range
0.1
1.7
V
Input serial resistance
1
–
–
MΩ
Note: “AT+CADC” can be used to read the voltage of the ADC pin, for more details, please refer
to document [1].
to document [1].
3.9.2
LDO
SIM7000 has a LDO power output named VDD_EXT. The output voltage is 1.8V.
Figure 27：Power on sequence of the VDD_EXT
Table 18: Electronic characteristic
Symbol
Description
Min.
Typ.
Max.
Unit
V
VDD_EXT
Output voltage
1.7
1.8
1.9
V
I
O
Output current
-
-
50
mA
Note
：
The VDD_EXT is used to the IO power in the module. The Output voltage is not supported
to set.