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TDA7264 数据表(PDF) 10 Page - STMicroelectronics |
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TDA7264 数据表(HTML) 10 Page - STMicroelectronics |
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10 / 14 page  Applications information TDA7264 10/14 Doc ID 1477 Rev 6 Table 6. Recommended component values for demo board Component Recommended value Purpose Larger than recommended value Smaller than recommended value R1 10 k Ω Mute circuit Decrease in DZ biasing current - R2 15 k Ω Mute circuit VPIN4 shifted downwards VPIN4 shifted upwards R3 18 k Ω Mute circuit VPIN4 shifted upwards VPIN4 shifted downwards R4 15 k Ω Mute circuit VPIN4 shifted upwards VPIN4 shifted downwards R5, R6 4.7 Ω Frequency stability Danger of oscillation Danger of oscillation C1, C2 1 µF Input AC coupling - Higher low- frequency cutoff C3 1 µF Standby/mute time constant Longer on/off time Shorter on/off time C4, C6 1000 µF Supply voltage decoupling - Danger of oscillation C5, C7 0.1 µF Supply voltage decoupling - Danger of oscillation C8, C9 0.1 µF Frequency stability - - Dz 5.1 V Mute circuit - - Q1 BC107 Mute circuit - - |
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