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SIM800L データシート(PDF) 54 Page - SIMCom

部品番号 SIM800L
部品情報  Hardware Design_V2.02
PDF  73 Pages
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メーカー  SIMCOM [SIMCom]
ホームページ  https://www.simcom.com
Logo SIMCOM - SIMCom

SIM800L データシート(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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