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STA543SA データシート(PDF) 12 Page - STMicroelectronics |
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STA543SA データシート(HTML) 12 Page - STMicroelectronics |
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12 / 23 page  4 Evaluation Board STA543SA 12/23 CD00061065 Figure 7. Evaluation Board PCB and Component Layout Table 7. Part list Component Recommended Value Purpose Larger than Recommended value Smaller then Recommended value R1 10K St-By Circuit Larger On/Off time Smaller On/Off time R2,R7 Not mounted See notes R3,R6 Not mounted See notes R4,R5,R8 300K DC-Vol CTRL P1,P2 100K pot. DC-Vol CTRL R10 10K Open Collector Pull up C1 10uF St-by Circuit Larger On/Off time Smaller On/Off time C2 100nF Supply Voltage Bypass Danger of oscillations C3 1000uF Supply Voltage Bypass Danger of oscillations C4,C8 220nF Input DC decoupling L/R Lower low freq Cutoff Higher low freq Cutoff C10 470nF Input DC decoupling Bass Lower low freq Cutoff Higher low freq Cutoff C11 Not mounted See notes C6,C7,C12 100nF DC Vol. bypass C5,C9 1000uF Output Dc decoupling Lower low freq Cutoff Higher low freq Cutoff C13 1uF C14 47uF SVR Increase of SVR , increase of switch ON time Degradation of SVR Component Layout PCB |
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