TDA7375AV

Functional description

Doc ID 6325 Rev 5

15/20

capacitor Cout for any reason is shorted, the loudspeaker will not be damaged being this soft

short circuit condition revealed.

Figure 23.

Single ended configuration

4.6.1

Diagnostics facility

The TDA7375AV is equipped with a diagnostic circuitry able to detect the following events:

●

Clipping in the output signal

●

Thermal shutdown

●

Output fault

–

short to GND

–

short to VS

–

soft short at turn on

The information is available across an open collector output (pin 10) through a current

sinking when the event is detected. A current sinking at pin 10 is triggered when a certain

distortion level is reached at any of the outputs. This function allows gain compression

possibility whenever the amplifier is over driven.

4.6.2

Thermal shutdown

In this case the output 10 will signal the proximity of the junction temperature to the

shutdown threshold. Typically current sinking at pin 10 will start ~10 °C before the shutdown

threshold is reached.

Figure 24.

Clipping detection waveforms