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SIM800L Datasheet(PDF) 54 Page - SIMCom

No. de pieza SIM800L
Descripción Electrónicos  Hardware Design_V2.02
PDF  73 Pages
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Fabricante Electrónico  SIMCOM [SIMCom]
Página de inicio  https://www.simcom.com
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SIM800L Datasheet(HTML) 54 Page - SIMCom

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The module provides 2 FM antenna pad named FM_ANTP and FM_ANTN, these are difference signal. The FM
antenna interface circuit is recommended as following:
Figure 52: FM antenna matching circuit
Normally, R301\R302\R303\R304 are 0Ω, C301\C302\C303\C304 are not mounted.
The earphone is often used for FM antenna, as an example, the pin GND of the 3.5mm earphone is connected to
the FM interface. The circuit is recommended as following:
Figure 53: GND pin of the earphone use to be the FM antenna interface
Normally, R301\R303 are 0Ω, C301\C302\C303\C304\L301 are not mounted.
SIM800H&SIM800L_Hardware Design_V2.02
54
2015-07-27



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