Quectel LPWA Series User Manual

LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
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Figure Index
Figure 1: Functional Diagram of BG950A-GL.......................................................................................................16
Figure 2: Functional Diagram of BG951A-GL.......................................................................................................17
Figure 3: Pin Assignment of BG950A-GL & BG951A-GL (Top View)...............................................................18
Figure 4: Sleep Mode Application via UART Interface........................................................................................30
Figure 5: Power Supply Limits During Burst Transmission................................................................................ 32
Figure 6: Star Structure of the Power Supply....................................................................................................... 32
Figure 7: Turn on the Module with Driving Circuit................................................................................................33
Figure 8: Turn on the Module a Button.................................................................................................................. 34
Figure 9: Power-up Timing.......................................................................................................................................34
Figure 10: Power-down Timing (PWRKEY & PON_TRIG
）
..............................................................................35
Figure 11: Power-down Timing
（
AT Command & PON_TRIG
）
......................................................................36
Figure 12: Reference Circuit of RESET_N with Driving Circuit.........................................................................37
Figure 13: Reference Circuit of RESET_N with a Button................................................................................... 37
Figure 14: Reset Timing........................................................................................................................................... 37
Figure 15: Reference Circuit of PON_TRIG......................................................................................................... 38
Figure 16: Reference Circuit of (U)SIM Interface with an 8-Pin (U)SIM Card Connector.............................41
Figure 17: Reference Circuit of (U)SIM Interface with a 6-Pin (U)SIM Card Connector...............................41
Figure 18: Reference Circuit of USB Application................................................................................................. 43
Figure 19: Main UART Reference Design (Translator Chip)..............................................................................46
Figure 20: Main UART Reference Design (Transistor Circuit)...........................................................................46
Figure 21: Reference Design of PCM Application with Audio Codec............................................................... 48
Figure 22: Reference Circuit of the PSM Status Indication................................................................................50
Figure 23: Reference Circuit of Network Status Indication................................................................................ 51
Figure 24: Reference Circuits of STATUS.............................................................................................................51
Figure 25: Reference Circuit of Main Antenna Interface.....................................................................................58
Figure 26: Reference Circuit of GNSS Antenna...................................................................................................60
Figure 27: Microstrip Design on a 2-layer PCB....................................................................................................61
Figure 28: Coplanar Waveguide Design on a 2-layer PCB................................................................................61
Figure 29: Coplanar Waveguide Design on a 4-layer PCB (Layer 3 as Reference Ground).......................62
Figure 30: Coplanar Waveguide Design on a 4-layer PCB (Layer 4 as Reference Ground).......................62
Figure 31: Dimensions of the U.FL-R-SMT Connector (Unit: mm)...................................................................63
Figure 32: Mechanicals of U.FL-LP Connectors.................................................................................................. 64
Figure 33: Space Factor of Mated Connector (Unit: mm).................................................................................. 64
Figure 34: Module Top and Side Dimensions (Unit: mm)...................................................................................72
Figure 35: Module Bottom Dimensions (Bottom View, Unit: mm).....................................................................73
Figure 36: Recommended Footprint (Top View).................................................................................................. 74
Figure 37: Top & Bottom Views of BG950A-GL & BG951A-GL.........................................................................75
Figure 38: Recommended Reflow Soldering Thermal Profile........................................................................... 77
Figure 39: Carrier Tape Dimension Drawing.........................................................................................................79
Figure 40: Plastic Reel Dimension Drawing......................................................................................................... 79
Figure 41: Packaging Process................................................................................................................................ 80

Quectel LPWA Series Specifications

General

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