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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMPR4955AF датащи(PDF) 163 Page - Toshiba Semiconductor |
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TMPR4955AF датащи(HTML) 163 Page - Toshiba Semiconductor |
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163 / 168 page  Appendix A. A-1 A. PLL Passive Components The Phase Locked Loop circuit requires several passive components for proper operation, which are connected to VccPLL, and VssPLL, as illustrated in Figure A.1. Figure A.1 PLL Recommended Circuit Values: • R = 5 Ω (*1) • C1 = 1 nF (*1) • C2 = 82 nF (*1) • C3 = 10 µF (*1) • VccInt = 1.5 V ± 0.1 V The inductors (L) can be used as alternatives to the resistors (R) to filter the power supply. It is essential to isolate the analog power and ground for the PLL circuit (VccPLL/VssPLL) from the regular power and ground (VccInt/Vss). TX4955A VccInt VccPLL PLLCAP (Reserved) VssPLL VSS C1 C2 C3 R L C1, C2, C3, R and L are Board Components which should be placed as close as possible to the processor. R L |
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