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TA8261AH

Max Power 40 W BTL × 4CH Audio Power IC

Toshiba 

TA8261AH

6. Output clip detection function (pin 25)

The output clip detection terminal of pin 25 has the open collector output structure on chip as shown in

Figure 11. In case that the output waveform is clipping, the clip detection circuit is operated and NPN Tr.

(Q2) is turned on.

It is possible to improve the audio quality with controlling the volume, tone control circuit through L.P.F.

smoothing circuit as shown in Figure 11.

In case of being unused this function, use this IC as open connection on pin 25.

(Application)

pin 25: Open collector output (active low)

Figure 11

(A) Output (AC wave form)

(B) Clip detector circuit (internal)

(C) Clip DET. terminal (pin 25)

*: Actually, the waveform is solid line because the output offset voltage detection, which is a kind of the self

diagnosis, has priority.

Figure 12 Clip detection

8

2001-08-16

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