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STW81101 Scheda tecnica(PDF) 41 Page - STMicroelectronics

Il numero della parte STW81101
Spiegazioni elettronici  Multi-band RF frequency synthesizer with integrated VCOs
PDF  48 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STW81101 Scheda tecnica(HTML) 41 Page - STMicroelectronics

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STW81101
Application information
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A first solution to combine the differential outputs is the lumped LC type balun tuned in the
2GHz band (
Figure 32).
Figure 32.
LC lumped balun for divided by 2 output (MATCH_LC_LUMP_2G.dsn)
The same recommendation for the SMD components also applies to the divided by 2 output.
Another topology suited to combining the two outputs for the divided by 2 frequencies is
represented in
Figure 33.
Figure 33.
Evaluation board (EVB2G) matching network (MATCH_EVB2G.dsn)
RF
50 ohm
50 ohm
50 ohm
2.7nH
2.7nH
2pF
2pF
2.7nH
2.7nH
3nH
2pF
2pF
3pF
Vcc
Vcc
OUTP
RF
OUTN
1.2pF
22pF
RF
50 ohm
50 ohm
50 ohm
5.5nH
1.9nH
5.5nH
22pF
2:1
22pF
Vcc
Vcc
OUTP
RF
OUTN



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