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TDA7462 датащи(PDF) 12 Page - STMicroelectronics |
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TDA7462 датащи(HTML) 12 Page - STMicroelectronics |
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12 / 25 page ![]() dB Hz -50.0 -40.0 -30.0 -20.0 -10.0 0.0 10.0 100.0 1.0K 10.0K Subwoofer Application Figure 14. Subwoofer Application with LPF 80/115Hz and HPF 90/130Hz dB Hz -50.0 -40.0 -30.0 -20.0 -10.0 0.0 10.0 100.0 1.0K 10.0K VoiceBand Application Figure 15. VoiceBand Application with HPF 180/260Hz and LPF 3k/6kHz 80Hz/115Hz Figure 16. Switchable configuration for Front/Rear processing Speaker Attenuator Due to practical aspects the steps in the speak- erattenuators are not linear over the full range. At attenuations more than 24dB the steps increase from 1.5dB to 10dB (see data byte specification). Subwoofer The Subwoofer output is a differential mono out- put with 6dB gain. The outgoing signal generated by adding the left and the right channel. The at- tenuator is exactely the same like the other speakers. In some applications it could be helpful to change the phase of this output by software. For this pur- pose a bit is available in the subwoofer byte to change the phase from 0° to 180°. TDA7462 12/25 |
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