Quectel LPWA Series Hardware Design

LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
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Figure Index
Figure 1: Functional Diagram of BG950A-GL.......................................................................................................18
Figure 2: Pin Assignment of BG950A-GL (Top View)..........................................................................................19
Figure 3: Sleep Mode Application via UART Interface........................................................................................28
Figure 4: Power Supply Limits During Burst Transmission................................................................................ 32
Figure 5: Star Structure of the Power Supply....................................................................................................... 32
Figure 6: Turn on the Module by Using Driving Circuit....................................................................................... 33
Figure 7: Turn on the Module by Using Keystroke.............................................................................................. 33
Figure 8: Power-up Timing.......................................................................................................................................34
Figure 9: Power-down Timing..................................................................................................................................35
Figure 10: Reference Circuit of RESET_N with Driving Circuit.........................................................................36
Figure 11: Reference Circuit of RESET_N with A Button................................................................................... 36
Figure 12: Reset Timing........................................................................................................................................... 37
Figure 13: Reference Circuit of PON_TRIG......................................................................................................... 38
Figure 14: Reference Circuit of (U)SIM Interface with an 8-Pin (U)SIM Card Connector.............................40
Figure 15: Reference Circuit of (U)SIM Interface with a 6-Pin (U)SIM Card Connector...............................40
Figure 16: Reference Circuit of USB Application................................................................................................. 42
Figure 17: Reference Circuit of PCM Interface.................................................................................................... 43
Figure 18: Reference Circuit with Translator Chip...............................................................................................45
Figure 19: Reference Circuit with Transistor Circuit............................................................................................46
Figure 20: Reference Circuit of the PSM Status Indication................................................................................48
Figure 21: Reference Circuit of Network Status Indication................................................................................ 49
Figure 22: Reference Circuits of STATUS.............................................................................................................49
Figure 23: Reference Circuit for Main Antenna Interface................................................................................... 57
Figure 24: Reference Circuit of GNSS Antenna...................................................................................................59
Figure 25: Microstrip Design on a 2-layer PCB....................................................................................................60
Figure 26: Coplanar Waveguide Design on a 2-layer PCB................................................................................60
Figure 27: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground).......................61
Figure 28: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground).......................61
Figure 29: Dimensions of the U.FL-R-SMT Connector (Unit: mm)...................................................................63
Figure 30: Mechanicals of U.FL-LP Connectors.................................................................................................. 63
Figure 31: Space Factor of Mated Connector (Unit: mm).................................................................................. 64
Figure 32: Module Top and Side Dimensions (Unit: mm)...................................................................................72
Figure 33: Module Bottom Dimensions (Bottom View, Unit: mm).....................................................................73
Figure 34: Recommended Footprint (Top View).................................................................................................. 74
Figure 35: Top & Bottom Views of the Module..................................................................................................... 75
Figure 36: Recommended Reflow Soldering Thermal Profile........................................................................... 77
Figure 37: Tape Specifications................................................................................................................................ 79
Figure 38: Reel Specifications.................................................................................................................................79

Quectel LPWA Series Specifications

General

Brand	Quectel
Model	LPWA Series
Category	GSM/GPRS Modules
Language	English