TA8251AHQ

2004-09-28

5

5. Muting function: Pin(1), pin(25)

By means of controlling pin(25) (mute control terminal) less than about 1.5V, it can make the IC muting

etc. In other words, pin(25) is inhibited to be pulled up, for instance fig. 5 application.

The attenuation by the muting function is 70dB (typ.). This muting is very smooth attenuating by the time

constant of pin(1): smoothing.

Therefore, this function is suitable to the audio muting. The time for attenuation: Tatt is adjustable by changing

So, please decide the time of tatt by testing on the units.

6. AUX. amplifier: Pin(16)

The pin(16) is for input terminal of AUX. amplifier.

The total gain is 0dB by using of AUX. amplifier.

Therefore, the µ−con can directly drive the AUX. amplifier.