User Manual

Index
1. Overall Introduction ...................................................................................................... 3
1.1. Application ............................................................................................................ 3
1.2. Features ............................................................................................................... 4
2. Product Dimension ....................................................................................................... 6
2.1. PCB Dimensions & Pin Indication ......................................................................... 6
2.2. Recommended Layout of Solder Pad ................................................................... 8
2.3. RF Layout Suggestion (aka Keep-Out Area) ...................................................... 12
2.4. Pin Assignment ................................................................................................... 15
2.5. GPIO Located Near the Radio ............................................................................ 18
3. Main Chip Solution ...................................................................................................... 18
4. Shipment Packaging Information .............................................................................. 19
5. Specification ................................................................................................................ 20
5.1. Absolute Maximum Ratings ................................................................................ 20
5.2. Operating Conditions .......................................................................................... 20
5.3. Electrical Specifications ...................................................................................... 21
6. Block Diagram ............................................................................................................. 27
7. Antenna ........................................................................................................................ 28
7.1. MDBT50Q Series ............................................................................................... 28
7.2. MDBT50Q-P Series ............................................................................................ 30
8. Reference Circuit ......................................................................................................... 32
9. Certification ................................................................................................................. 33
10. Notes and Cautions ..................................................................................................... 33
11. Basic Facts for nRF52 Chip ........................................................................................ 34
12. Useful Links ................................................................................................................. 35
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Release Note ....................................................................................................................... 38