Smart Module Series
SC200R&SC262R_Series_Hardware_Design 6 / 124
3.22. Audio Interfaces ....................................................................................................................... 70
3.22.1. Reference Circuit Design for Microphone Interfaces ..................................................... 71
3.22.2. Reference Circuit Design for Earpiece Interface ........................................................... 72
3.22.3. Reference Circuit Design for Headset Interface ............................................................ 73
3.22.4. Reference Circuit Design for Loudspeaker Interface..................................................... 73
3.22.5. Design Considerations for Audio Interfaces .................................................................. 73
3.23. Emergency Download Interface .............................................................................................. 74
4 Wi-Fi and Bluetooth ........................................................................................................................... 75
4.1. Wi-Fi Overview ........................................................................................................................ 75
4.1.1. Wi-Fi Performance ......................................................................................................... 75
4.2. Bluetooth Overview ................................................................................................................. 77
4.2.1. Bluetooth Performance .................................................................................................. 78
5 GNSS ................................................................................................................................................... 79
5.1. GNSS Performance ................................................................................................................. 79
5.2. GNSS RF Design Guidelines .................................................................................................. 80
6 Antenna Interfaces ............................................................................................................................. 81
6.1. Main/Rx-diversity Antenna Interfaces ...................................................................................... 81
6.1.1. Operating Frequencies................................................................................................... 81
6.1.2. Reference Design for Main and Rx-diversity Antenna Interfaces .................................. 84
6.2. Wi-Fi/Bluetooth Antenna Interface ........................................................................................... 85
6.3. GNSS Antenna Interface ......................................................................................................... 86
6.3.1. Recommended Circuit for Passive Antenna .................................................................. 87
6.3.2. Recommended Circuit for Active Antenna ..................................................................... 87
6.4. Reference Design for RF Layout ............................................................................................. 88
6.5. Antenna Installation ................................................................................................................. 90
6.5.1. Antenna Requirements .................................................................................................. 90
6.5.2. Recommended RF Connector for Antenna Installation ................................................. 91
7 Electrical, Reliability and Radio Characteristics ............................................................................ 93
7.1. Absolute Maximum Ratings ..................................................................................................... 93
7.2. Power Supply Ratings ............................................................................................................. 93
7.3. Operating and Storage Temperatures ..................................................................................... 94
7.4. Current Consumption .............................................................................................................. 94
7.5. RF Output Power ................................................................................................................... 103
7.6. RF Receiving Sensitivity ........................................................................................................ 106
7.7. Electrostatic Discharge .......................................................................................................... 110
8 Mechanical Dimensions .................................................................................................................. 111
8.1. Mechanical Dimensions of the Module...................................................................................111
8.2. Recommended Footprint ....................................................................................................... 113
8.3. Top and Bottom Views of the Module .................................................................................... 114
9 Storage, Manufacturing and Packaging ........................................................................................ 115
9.1. Storage .................................................................................................................................. 115
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