Quectel EG91 Series Hardware Design
Also see for EG91 Series: Hardware designHardware designHardware design
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Contents
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LTE Module SeriesEG91 Hardware DesignEG91_Hardware_Design 5 / 933.12. PCM and I2C Interfaces ........................................................................................................ 483.13. SPI Interface ......................................................................................................................... 513.14. Network Status Indication ..................................................................................................... 513.15. STATUS ................................................................................................................................ 523.16. ADC Interface ....................................................................................................................... 533.17. Behaviors of RI ..................................................................................................................... 543.18. USB_BOOT Interface............................................................................................................ 554 GNSS Receiver ................................................................................................................................ 574.1. General Description .............................................................................................................. 574.2. GNSS Performance .............................................................................................................. 574.3. Layout Guidelines ................................................................................................................. 585 Antenna Interfaces .......................................................................................................................... 595.1. Main/Rx-diversityAntenna Interfaces..................................................................................... 595.1.1. Pin Definition................................................................................................................ 595.1.2. Operating Frequency ................................................................................................... 595.1.3. Reference Design of RF Antenna Interface ................................................................. 605.1.4. Reference Design of RF Layout................................................................................... 615.2. GNSS Antenna Interface....................................................................................................... 635.3. Antenna Installation .............................................................................................................. 645.3.1. Antenna Requirement .................................................................................................. 645.3.2. Recommended RF Connector for Antenna Installation ................................................ 656 Electrical, Reliability and RadioCharacteristics ........................................................................... 676.1. Absolute Maximum Ratings .................................................................................................. 676.2. Power Supply Ratings ........................................................................................................... 676.3. Operation and Storage Temperatures .................................................................................. 686.4. Current Consumption ............................................................................................................ 696.5. RF Output Power .................................................................................................................. 766.6. RF Receiving Sensitivity ....................................................................................................... 776.7. Electrostatic Discharge ......................................................................................................... 796.8. Thermal Consideration .......................................................................................................... 797 Mechanical Dimensions.................................................................................................................. 827.1. Mechanical Dimensions of the Module.................................................................................. 827.2. Recommended Footprint....................................................................................................... 847.3. Design Effect Drawings of the Module .................................................................................. 858 Storage, Manufacturing and Packaging ........................................................................................ 868.1. Storage ................................................................................................................................. 868.2. Manufacturing and Soldering ................................................................................................ 878.3. Packaging ............................................................................................................................. 889 Appendix A References .................................................................................................................. 9010 Appendix B GPRS Coding Schemes ............................................................................................. 94 |
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