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STW81103 bảng dữ liệu(PDF) 45 Page - STMicroelectronics

tên linh kiện STW81103
Giải thích chi tiết về linh kiện  Multi-band RF frequency synthesizer with integrated VCOs
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STW81103 bảng dữ liệu(HTML) 45 Page - STMicroelectronics

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STW81103
Application information
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For differential to single conversion, the 50 to 100
Ω Johanson balun (1600BL15B100) is
recommended.
8.3
Divided by 4 output
The topology, components, values and considerations of
Figure 31 also apply to the divided
by 4 output (MATCH_LC_LUMP_1G_DIFF.dsn).
As for the previous sections, a solution to combine the differential outputs is the lumped LC
type balun tuned in the 1 GHz band (
Figure 34).
Figure 34.
LC lumped balun for divided by 4 output (MATCH_LC_LUMP_1G.dsn)
If you prefer to use an RF balun, you can adapt the topology depicted in
Figure 33, and
change the balun and the matching components (
Figure 35). The suggested balun for the
0.625 - 1.25 GHz frequency range is the 1:1 Johanson 900BL15C050.
RF
25 ohm
50 ohm
25 ohm
5.5nH
5.5nH
4pF
4pF
5.5nH
5.5nH
14nH
4pF
4pF
6pF
Vcc
Vcc
OUTP
RF
OUTN



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