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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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STW81103 데이터시트(PDF) 45 Page - STMicroelectronics |
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STW81103 데이터시트(HTML) 45 Page - STMicroelectronics |
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45 / 53 page  STW81103 Application information 45/53 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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