TDA7375AV_12 Datasheet, PDF (16/20 Pages) STMicroelectronics – 2 x 37 W dual/quad power amplifier for car radio

Functional description
Figure 25. Output fault waveforms (see Figure 26)
TDA7375AV
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Figure 26. Fault waveforms
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Handling of the diagnostics information
As various kinds of information are available at the same pin (clipping detection, output fault,
thermal proximity), this signal must be handled properly in order to discriminate each event.
This could be done by taking into account the different timing of the diagnostic output during
each case.
Normally the clip detector signalling produces a low level at pin 10 that is shorter referred to
every kind of fault detection; based on this assumption an interface circuitry to differentiate
the information is represented in the following schematic.
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Doc ID 6325 Rev 4