User's Manual
Table Of Contents
- RF Exposure Statement:
- General Notes
- Copyright
- Contents
- Table Index
- Figure Index
- Revision History
- 1Introduction
- 2Package Information
- 3Interface Application
- 3.1Power Supply
- Figure 5: VBAT voltage drop during burst emission
- 3.1.1Power Supply Design Guide
- Figure 6: Power supply application circuit
- Table 7: Recommended Zener diode list
- 3.1.2Recommended Power Supply Circuit
- Figure 7: Linear regulator reference circuit
- Figure 8: Switching mode power supply reference ci
- 3.1.3Voltage Monitor
- 3.2Power on/Power off/Reset Function
- 3.3UART Interface
- 3.4USB Interface
- 3.5USIM Interface
- 3.6PCM Interface
- 3.7SD Interface
- 3.8I2C Interface
- 3.9SDIO Interface
- 3.10SPI Interface
- 3.11Network status
- 3.12Flight Mode Control
- Switch
- 3.1Power Supply
- 4RF Specifications
- 5Electrical Specifications
- 6SMT Production Guide
- 7Packaging
- Appendix
SIM7600SA-H_User Manual_V1.00
2017-10-11
Smart Machine Smart Decision
3.13.2 ADC
SIM7600SA-H 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-H 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].