User's Manual

Smart Machine Smart Decision
SIM7600SA_User Manual_V1.00 2017-10-11
3.13.2 ADC
SIM7600SA has 2 dedicated ADC pins named ADC1 and ADC2.They are available for digitizing
analog signals such as battery voltage and so on. These electronic specifications are shown in the
following table.
Table 20: ADC1 and ADC2 electronic characteristics
Characteristics
Min.
Typ.
Max.
Unit
Resolution
–
15
–
Bits
Conversion time
–
442
–
ms
Input Range
0.1
1.7
V
Input serial resistance
1
–
–
MΩ
Note: “AT+CADC” and “AT+CADC2” can be used to read the voltage of the ADC1 and ADC2
pins, for more details, please refer to document [1].
3.13.3 LDO
SIM7600SA has a LDO power output, named VDD_EXT. its output voltage is 0V by default, Users
can switch the LDO on or off by the AT command “AT+CVAUXS” and configure its output voltage
by the AT command “AT+CVAUXV”.
Table 21: Electronic characteristic
Symbol
Description
Min.
Typ.
Max.
Unit
V
VDD_EXT
Output voltage
1.7
2.95
3.05
V
I
O
Output current
-
-
150
mA
Note ： For more details of AT commands about VDD_EXT, please refer to document [1].