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TDA7476 Datasheet(PDF) 4 Page - STMicroelectronics |
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TDA7476 Datasheet(HTML) 4 Page - STMicroelectronics |
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4 / 19 page  TDA7476 4/19 Lsc Shorted Load det. (voltage across the Audio Outputs). Below this limit the load is considered shorted. Power amplifier in st-by condition 5 mV Lop Open Load det. (voltage across the Audio Outputs). Above this limit the load is considered open. 550 mV Lnop Normal load det. (Voltage across the Audio Output). Within these limits the load resistance is considered normal. 22 220 mV AUX INPUTS AUX1, AUX2 - TURN ON DIAGNOSTIC Agnd Short to GND det. (voltage across the sensing resistor). Above this limit the AUX pin is considered in Short Circuit to GND. High side driver ON 0.85 V Aol Open load det. (voltage across the sensing resistor). Below this limit the Aux pin is considered in Open Load condition. 0.085 V Anop Normal Operation det. (Voltage across the sensing resistor). Within these limits the load resistance connected to the Aux pin is considered correct. 0.125 0.5 V AUDIO INPUTS - PERMANENT DIAGNOSTIC Pgnd Short to GND det. (below this limit, the Audio Output is considered in Short Circuit to Vs) This condition must be true for a time higher than Tdel Power amplifier ON 0.8 V Pvs Short to Vs det. (above this limit the Audio Output is considered in Short Circuit to Vs) This condition must be true for a time higher than Tdel Vs-0.6 V Pnop Normal operation thresholds. (Within these limits, the Audio Output is considered without faults) 1.2 Vs-1.2 V AUX INPUTS - PERMANENT DIAGNOSTIC Agnd Short to GND det. (above this limit, the Audio Output is considered in Short Circuit to Vs) This condition must be true for a time higher than Tdel High side driver ON 0.85 V ELECTRICAL CHARACTERISTICS (continued) (Vs = 14.4V; Tamb = 25°, unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit |
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