Smart Machine Smart Decision
SIM800L(MT6261)_Hardware Design_V1.01 9 2016-07-07
FIGURE 47: GSM SIMPLE ANTENNA MATCHING CIRCUIT .................................................................................. 48
FIGURE 48: FM ANTENNA MATCHING CIRCUIT .................................................................................................... 48
FIGURE 49: GND PIN OF THE EARPHONE USE TO BE THE FM ANTENNA INTERFACE.................................. 49
FIGURE 50: PIN ASSIGNMENT .................................................................................................................................... 50
FIGURE 51: RECOMMENDED PCB LAYOUT ............................................................................................................ 52
FIGURE 52: TOP AND BOTTOM VIEW OF SIM800L ................................................................................................. 58
FIGURE 53: TYPICAL SOLDER REFLOW PROFILE OF LEAD-FREE PROCESSES .............................................. 58
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