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
SIM7090G User Manual V1.01
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1. GNSS is closed by default and can be started by “AT+CGNSPWR=1”. The AT command has two
parameters, the first is on/off, and the second is GNSS mode. Default mode is standalone mode. AGPS
mode needs more support from the mobile telecommunication network. Please refer to document [21]
for more details.
2. If the passive antenna is used, put the matching circuits close to the antenna.
3. Make sure there are no noise signals around GNSS antenna.
4.4 RF traces note
4.4.1 RF traces layout
Keep the RF trace from module ant pin to antenna as short as possible
RF trace should be 50 Ω either on the top layer or in the inner layer
RF trace should be avoided right angle and sharp angle.
Put enough GND via around RF traces.
RF trace should be far away from other high speed signal lines.
Figure 28: RF trace should be far away from other high speed signal lines
NOTE