Product Info

Smart Wi-Fi Module Series
SC20-WL Hardware Design
SC20-WL_Hardware_Design 4 / 81
3.21. Audio Interfaces ....................................................................................................................... 57
3.21.1. Reference Circuit Design for Microphone ...................................................................... 58
3.21.2. Reference Circuit Design for Receiver Interface ........................................................... 58
3.21.3. Reference Circuit Design for Headphone Interface ....................................................... 59
3.21.4. Reference Circuit Design for Loudspeaker Interface..................................................... 59
3.21.5. Audio Interface Design Considerations ......................................................................... 59
3.22. Emergency Download Interface .............................................................................................. 60
4 Wi-Fi and BT ....................................................................................................................................... 61
4.1. Wi-Fi Overview ........................................................................................................................ 61
4.1.1. Wi-Fi Performance ......................................................................................................... 61
4.2. BT Overview ............................................................................................................................ 63
4.2.1. BT Performance ............................................................................................................. 64
5 Antenna Interface ............................................................................................................................... 65
5.1. Wi-Fi/BT Antenna Interface ..................................................................................................... 65
5.1.1. Reference Design of RF Layout..................................................................................... 66
5.2. Antenna Installation ................................................................................................................. 68
5.2.1. Antenna Requirements .................................................................................................. 68
5.2.2. Recommended RF Connector for Antenna Installation ................................................. 68
6 Electrical, Reliability and Radio Characteristics ............................................................................ 70
6.1. Absolute Maximum Ratings ..................................................................................................... 70
6.2. Power Supply Ratings ............................................................................................................. 70
6.3. Charging Performance Specifications ..................................................................................... 71
6.4. Operation and StorageTemperatures ...................................................................................... 71
6.5. Current Consumption .............................................................................................................. 72
6.6. Electrostatic Discharge ............................................................................................................ 73
7 Mechanical Dimensions .................................................................................................................... 74
7.1. Mechanical Dimensions of the Module.................................................................................... 74
7.2. Recommended Footprint ......................................................................................................... 76
7.3. Top and Bottom Views of the Module ...................................................................................... 77
8 Storage, Manufacturing and Packaging .......................................................................................... 78
8.1. Storage..................................................................................................................................... 78
8.2. Manufacturing and Soldering .................................................................................................. 79
8.3. Packaging ................................................................................................................................ 80
9 Appendix A References ..................................................................................................................... 82