User's Manual
Table Of Contents
- Contents
- Table Index
- Figure Index
- 1Introduction
- 1.1Product Outline
- 1.2Hardware Interface Overview
- 1.3Hardware Block Diagram
- 1.4Functional Overview
- 2Package Information
- 2.1.Pin Assignment Overview
- 2.2.Pin Description
- 2.3.Mechanical Information
- 2.4.Footprint Recommendation
- 3Interface Application
- 3.1Power Supply
- 3.3UART Interface
- 3.4USB Interface
- 3.5SIM Interface
- 3.6PCM Interface
- 3.7I2C Interface
- 3.8SPI Interface
- 3.9Network status
- 3.10ADC interface
- 3.11LDO output
- 3.12USB_BOOT Interface
- 3.13GPIO Interface
- 3.14 RF control Interface
- 3.15Force USB Download Interface
- 4RF Specifications
- 4.1LTE RF Specifications
- 4.2LTE Antenna Design Guide
- 4.3GNSS
- 4.4RF traces note
- 5 Electrical Specifications
- 5.1Absolute maximum ratings
- 5.2Operating conditions
- 5.3Operating Mode
- 5.4Current Consumption
- 5.5ESD Notes
- 6 SMT Production Guide
- 6.1Top and Bottom View of SIM7090G
- 6.2Label Information
- 6.3Typical SMT Reflow Profile
- 6.5Baking
- 6.6Stencil Foil Design Recommendation
- 7 Packaging
- 7.1Tray packaging
- 8 Appendix
- 8.1Coding Schemes and Maximum Net Data Rates over Air
- 8.2Related Documents
- 8.3Terms and Abbreviations
- 8.4Safety Caution
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3.10ADC interface
SIM7090G has two dedicated ADC pins. They are available for digitizing analog signals such as battery
voltage and so on. The input voltage range is from 0V to 1.8v. That is the maximum measurement range of
ADC cannot exceed 1.8V. If the input voltage of ADC PIN exceeds its range, it is necessary to implement
the resistance partial pressure on the hardware
Table 19: Pin Definition of ADC Interfaces
Pin Name
Pin No.
I/O
Description
Comment
ADC0
17
AI
General purpose analog to
digital converter interface.
1.8V power domain
ADC1
18
AI
General purpose analog to
digital converter interface.
1.8V power domain
Table 20: ADC electronic characteristics
Characteristics
Min.
Typ.
Max.
Unit
Input Range
0
1.875
V
Internal pull-up resistor
400
KΩ
Input serial resistance
1
–
–
MΩ
“AT+CADC” can be used to read the voltage of the ADC pin, for more details, please refer to document
[1].
NOTE