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データシートサーチシステム |
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データシートサーチシステム |
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STW81101ATR データシート(PDF) 40 Page - STMicroelectronics |
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STW81101ATR データシート(HTML) 40 Page - STMicroelectronics |
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40 / 48 page  Application information STW81101 40/48 Figure 30. Evaluation board (EVB4G) matching network (MATCH_EVB4G.dsn) For differential to single conversion, the 50 to 100 Ω Johanson balun is recommended (3700BL15B100). 8.2 Divided by 2 output If your application does not require a balanced to unbalanced conversion, the output matching reduces to the simple circuit shown below ( Figure 31), which illustrates a differential to single-ended output network in the 1.65 - 2.2GHz range (MATCH_LC_LUMP_2G_DIFF.dsn). You can easily use this solution to provide one single- ended output that terminates the other output at 50 Ω with a 3dB power loss. Figure 31. Differential/single-ended output network (MATCH_LC_LUMP_2G_DIFF.dsn) 1pF 1pF 1.2pF 1.2pF 4.7pF 12pF RF 50 ohm 50 ohm 50 ohm 5.5nH 5.5nH 12pF 2:1 12pF Vcc Vcc OUTP RF OUTN RF 50 ohm 50 ohm 50 ohm 22nH 22nH 10pF 50 ohm 10pF Vcc Vcc OUTP RF OUTN |
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