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AN2744 데이터시트(PDF) 32 Page - STMicroelectronics

부품명 AN2744
상세설명  ST7538Q power line FSK transceiver
PDF  56 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2744 데이터시트(HTML) 32 Page - STMicroelectronics

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Board description
AN2744
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Figure 27
and Figure 28 show the results for the output spectrum measurement. The
EN50065-1 disturbance limits mask is traced in red. It may be compared with the typical
output spectrum of the ST7538Q dual channel reference design board for each channel.
Figure 26.
Conducted disturbance test setup
Figure 27.
Output spectrum (typical) at 72 kHz channel, mains 220 VAC, fixed transmitted tone =
"1"
EN50065
EN50065--1
1
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
130.0
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1.0E+08
Frequency (Hz)
f
C =70.8 kHz
S=120.1 dBµV
2f
C =141.6 kHz
S=55.3 dBµV
3f
C =212.4 kHz
S=58.1 dBµV
EN50065
EN50065--1
1
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
130.0
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1.0E+08
Frequency (Hz)
f
C =70.8 kHz
S=120.1 dBµV
2f
C =141.6 kHz
S=55.3 dBµV
3f
C =212.4 kHz
S=58.1 dBµV



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