TDA7476 Datasheet, PDF (3/15 Pages) STMicroelectronics – CAR RADIO DIAGNOSTIC PROCESSOR

ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
AUDIO INPUTS CH1, CH2, CH3, CH4, CH5 - TURN ON DIAGNOSTIC
Pgnd
Short to GND det. (below this
limit, the Audio Output is
considerd in Short Circuit to
GND)
Power amplifier in st-by
condition
Pvs
Short to Vs det. (above this
limit, the Audio Output is
considered in Short Circuit to Vs)
Pnop
Normal operation thresholds.
(Within these limits, the Audio
Output is considered without
faults)
Lsc
Shorted Load det. (voltage
across the Audio Outputs).
Below this limit the load is
considered shorted.
Lop
Open Load det. (voltage across
the Audio Outputs). Above this
limit the load is considered open.
Lnop
Normal load det. (Voltage
across the Audio Output).
Within these limits the load
resistance is considered normal.
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
Aol
Open load det. (voltage across
the sensing resistor). Below this
limit the Aux pin is considered in
Open Load condition.
Anop
Normal Operation det. (Voltage
across the sensing resistor).
Within these limits the load
resistance connected to the Aux
pin is considered correct.
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
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
Pnop
Normal operation thresholds.
(Within these limits, the Audio
Output is considered without
faults)
TDA7476
Min. Typ. Max. Unit
0.8
V
Vs-0.7
1.2
V
Vs-1.3 V
5
mV
550
mV
22
220 mV
0.75
0.125
V
0.085 V
0.5
V
0.8
V
Vs-0.7
V
1.2
Vs-1.3 V
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