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TDA7407 数据表(PDF) 24 Page - STMicroelectronics |
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TDA7407 数据表(HTML) 24 Page - STMicroelectronics |
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24 / 46 page ![]() Multipath detector TDA7407 24/46 AC Outputs and the AC Input could be used as additional stereo inputs. The input impedance of the AC Inputs is always 50K Ω. 5.1.20 Speaker Attenuator The speaker attenuators have exactely the same structure and range like the volume stage. Figure 9. Bass control @ fc = 80Hz, Q = 1 Figure 10. Bass center @ Gain = 14dB, Q =1 -15.0 -10.0 -5.0 0.0 5.0 10.0 15.0 10.0 100.0 1.0K 10.0K 0.0 2.5 5.0 7.5 10.0 12.5 15.0 10.0 100.0 1.0K 10.0K Figure 11. Bass quality factors @ Gain =14dB, fc = 80Hz Figure 12. Bass normal and DC mode @ Gain = 14dB, fc = 80Hz 0.0 2.5 5.0 7.5 10.0 12.5 15.0 10.0 100.0 1.0K 10.0K 0.0 2.5 5.0 7.5 10.0 12.5 15.0 10.0 100.0 1.0K 10.0K Note: In general the center frequency, Q and DC-mode can be set independently. The exception from this rule is the mode (5/xx1111xx) where the center frequency is set to 150Hz instead of 100Hz. |
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