Quectel SC206E Series Hardware Design page 7

3.22. Audio Interfaces ....................................................................................................................... 63
3.22.1. Reference Circuit Design for Microphone Interfaces ..................................................... 64
3.22.2. Reference Circuit Design for Earpiece Interface ........................................................... 65
3.22.3. Reference Circuit Design for Headset Interface ............................................................ 65
3.22.4. Reference Circuit Design for Lineout Interface .............................................................. 66
3.22.5. Audio Signal Design Considerations ............................................................................. 66
3.23. USB_BOOT ............................................................................................................................. 67
4 Wi-Fi/Bluetooth ................................................................................................................................... 68
4.1. Wi-Fi ......................................................................................................................................... 68
4.1.1. Wi-Fi Performance ......................................................................................................... 68
4.2. Bluetooth .................................................................................................................................. 70
4.2.1. Bluetooth Performance .................................................................................................. 71
5 GNSS ................................................................................................................................................... 72
5.1. GNSS Performance ................................................................................................................. 72
5.2. GNSS RF Design Guidelines .................................................................................................. 73
6 Antenna Interfaces ............................................................................................................................. 74
6.1. Main Antenna and Rx-diversity Antenna Interfaces ................................................................ 74
6.1.1. Operating Frequency ..................................................................................................... 74
6.1.2. Reference Design .......................................................................................................... 77
6.2. Wi-Fi/Bluetooth Antenna Interface ........................................................................................... 77
6.3. GNSS Antenna Interface ......................................................................................................... 78
6.3.1. Reference Circuit Design for Passive GNSS Antenna .................................................. 79
6.3.2. Reference Circuit Design for Active GNSS Antenna ..................................................... 80
6.4. RF Routing Guidelines ............................................................................................................ 80
6.5. Antenna Installation ................................................................................................................. 82
6.5.1. Antenna Requirements .................................................................................................. 82
6.5.2. RF Connector Recommendation ................................................................................... 83
7 Reliability, Radio and Electrical Characteristics ............................................................................ 85
7.1. Absolute Maximum Ratings ..................................................................................................... 85
7.2. Power Supply Ratings ............................................................................................................. 85
7.3. Digital I/O Characteristics ........................................................................................................ 86
7.4. Operating and Storage Temperatures ..................................................................................... 87
7.5. Power Consumption ................................................................................................................ 88
7.6. Tx Power .................................................................................................................................. 94
7.7. Rx Sensitivity ........................................................................................................................... 97
7.8. ESD Protection ........................................................................................................................ 99
8 Mechanical Information ................................................................................................................... 100
8.1. Mechanical Dimensions ......................................................................................................... 100
8.2. Recommended Footprint ....................................................................................................... 102
8.3. Top and Bottom Views ........................................................................................................... 103
9 Storage, Manufacturing & Packaging ............................................................................................ 104
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