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TDA7375A Scheda tecnica(PDF) 10 Page - STMicroelectronics |
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TDA7375A Scheda tecnica(HTML) 10 Page - STMicroelectronics |
10 / 15 page TDA7375A 10/15 Figure 24. 5.6.1 Diagnostics Facility The TDA7375A 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 overdriven. 5.6.2 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 25. Clipping Detection Waveforms |
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