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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MICRF405 датащи(PDF) 25 Page - Micrel Semiconductor |
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MICRF405 датащи(HTML) 25 Page - Micrel Semiconductor |
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25 / 46 page  Micrel MICRF405 April 2006 25 M9999-041906 (408) 955-1690 Table 17. External Loop Filter Values. C3 C1 CPOUT, pin 20 C2 R1 R2 VARIN, pin 21 C1 CPOUT, pin 20 C2 R1 VARIN, pin 21 C3 47nF a) b) C3 CP, internal C2 VARIN, internal c) R3 R1 CP, internal Vref - + C1 Figure 11. Loop filter for: a) Closed Loop Modulation, b) Open Loop Modulation and c) Internal Dual Path Filter. Mod. Type Freq [MHz] Baud Rate [kbaud/ sec] Coding PLL BW [kHz] Phase margin [ °] Phase detector Freq. [kHz] C1 [nF] C2 [nF] R1 [k Ω] R2 [k Ω] C3 [pF] VCO All > 30 Manchester 0.8 56 100 10 100 6.2 - - VCO All > 100 Manchester 3.0 56 100 0.68 68 27 - - Divider 315 < 20 DC-free 17 60 500 0.068 6.8 30 75 12 Divider 433 < 20 DC-free 18 60 500 0.068 6.8 30 75 12 Divider 868 < 15 DC-free 20 51 700 0.082 4.7 27 75 18 Divider 915 < 20 DC-free 21 60 500 0.047 4.7 36 91 5.6 Open loop All < 200 DC-free 26 56 500 0.047 0.47 43 NC 33000 |
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