TB2932HQ 데이터 시트보기 (PDF) - Toshiba

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TB2932HQ

Maximum Power 49 W BTL × 4-ch Audio Power IC

Toshiba 

TB2932HQ

Caution and Application Information (description is made referring only on the single

channel.)

1.Clip Detection

The output clip detection terminal, pin 4, has an open collector output structure on chip as shown in

Figure 3. In the case when the output waveform is clipping, the clip detection circuit is operated and the

NPN Tr. is turned on.

It is possible to improve the audio output quality by controlling the volume and/or tone control circuits

through a low pass filter (L.P.F.) smoothing circuit as shown in Figure 1.

The sensitivity of the circuit to clipping level can be selected T.H.D. = 1% or 10% via I2C bus.

In the event that this function is not used, pin4 should be left open circuit.

Clip detector

4

Volume control circuit

L.P.F.

smoothing

circuit

Tone control circuit

Output AC

waveform

Internal detection

circuit

Clip Det. 5 V

output

GND

Waveform L.P.F

output

Figure 1 Clip Detection

3

2009-02-02

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