E-TDA7476013TR STMicroelectronics, E-TDA7476013TR Datasheet - Page 9

• Manufacturer Part Number: E-TDA7476013TR
• Description: IC PROCESSOR RADIO DIAGN 24-SOIC
• Manufacturer: STMicroelectronics
• Type: Audio Processorr

Specifications of E-TDA7476013TR

• Applications: Automotive Audio
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The following table shows the result pointed out by TDA7476 when multiple misconnections are present:
(*) CH means CH+ or CH-
AUX1 - AUX2
PERMANENT DIAGNOSTIC - THRESHOLDS
CH1, CH2, CH3, CH4, CH5
AUX1 - AUX2
Voltage across the sensing resistors
The minimum voltage of the AUX IN pin to sense the open load condition is 2V.
The minimum voltage of the AUX IN pin to detect the short circuit to GND, by sensing the drop on the
resistors is 4.5V. If this voltage falls below 2V, the AUX in is considered short circuited to GND. From
2V to 4.5V the sensing circuit can detect a short circuit in both ways (by sensing across the resistor or
through the voltage between the AUX IN pin and GND).
The circuit will recognize as a fault condition any situation where the following short circuit voltages last
more than 2 sec (typ).
Output voltage
The voltage across the resistors Rsens1 or Rsens2 is sensed. The circuit will recognize as a fault
condition any situation where the following voltages last more than 2sec (typ) in the region "S.C.to GND"
or "open load".
S.C. CH(*) to GND + S.C. ACROSS LOAD
S.C. CH(*) to V
S.C. CH+ to V
S.C. CH- to V
S.C. CH+ to GND + OPEN LOAD
S.C. CH- to GND + OPEN LOAD
S.C. CH(*) to V
0V
V
V
ACTUAL FAULTS
S
S
S.C. to GND
S.C. to GND
S.C. to GND
S
S
S
+ S.C. ACROSS LOAD
+ S.C. CH+ to GND
+ S.C. CH- to GND
S
+ OPEN LOAD
0.85V
0.85V
0.8V
x
x
x
0.5V
1.2V
0.5V
Normal Operation
Normal Operation
Normal Operation
125mV
125mV
V
S
-1.2
x
x
x
V
S.C. to GND + S.C. to V
85mV
85mV
S
POINTED OUT FAULT
-0.6V
Open Load
Open Load
S.C. to Vs
OPEN LOAD
S.C. to GND
S.C. to GND
D97AU572A
D97AU573B
D97AU574A
S.C. to V
S.C. to V
S.C. to V
S
S
S
0V
V
0V
S
S
TDA7476
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