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AN3213 Folha de dados(PDF) 28 Page - STMicroelectronics

Nome de Peças AN3213
Descrição Electrónicos  ST7570 S-FSK power line networking system-on-chip
PDF  64 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
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AN3213 Folha de dados(HTML) 28 Page - STMicroelectronics

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Doc ID 17429 Rev 1
Simulation of the Tx active filter response against component tolerance, depicted in
Figure 18, shows +/-1 dB variation in gain module within the signal bandwidth, while the Q
variation is more sensitive around 100 kHz.
Figure 18.
Montecarlo simulation of the transmission active filter frequency
response
7.1.2
Reception passive filter
The reception filter is made up of the series of a resistor and a parallel L-C resonant. The
transfer function of the filter can be written as:
Equation 5
Where
●
RL is the DC series resistance of the inductor (in this case, about 2 Ω)
●
C‘1 is the parallel of C1 with the reverse capacitance of the transil diode D3, which is
about 2 nF.
The center frequency and the quality factor of the filter can be expressed as:
Equation 6
Equation 7



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