Datenblatt-Suchmaschine für elektronische Bauteile |
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BA3308F Datenblatt(PDF) 5 Page - Rohm |
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BA3308F Datenblatt(HTML) 5 Page - Rohm |
5 / 8 page 197 Audio ICs BA3308 / BA3308F / BA3308FV (2) Playback (See Fig. 7) During playback, the ch1 and ch2 amplifiers are used as NAB equalizer amplifiers, and time constant circuits are connected between pins 1 and 3, and 7 and 9 in the nega- tive-feedback section to give the NAB characteristics. The voltage gain is given by: GV = R11 ) R9/ (I ) jϖC9 S R9) /R3 In the same way as for recording, the NAB time constant circuit is adjusted to give the required gain (to prevent generation of a “pop” noise when power is applied). The output stage (pins 3 and 7) operating point is fixed at 3VF. Therefore, as indicated in the VMax. vs, VCC characteristic (see Fig. 19), even if the VCC voltage is made larger than 5V, the maximum output voltage will not exceed 1.2V (typ.). The ALC circuit is not required for playback, so pin 5 is grounded. The S / N ratio during playback is better if the external resistors R1 and R2 that are connected to the input pins (2 and 8) for recording are switched out. |
Ähnliche Teilenummer - BA3308F |
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Ähnliche Beschreibung - BA3308F |
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