E-TDA7476 STMicroelectronics, E-TDA7476 Datasheet - Page 5

• Manufacturer Part Number: E-TDA7476
• Description: IC PROCESSOR RADIO DIAGN 24-SOIC
• Manufacturer: STMicroelectronics
• Type: Audio Processorr

Specifications of E-TDA7476

• Applications: Automotive Audio
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Operating Temperature (min): -40C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V
WORKING PRINCIPLES
Turn-on diagnostic - CH1, CH2, CH3, CH4, CH5 -
Shorted load/open load detection
PERMANENT DIAGNOSTIC - ACQUISITION TIME DELAY
PERMANENT DIAGNOSTIC - WARNING PIN
ADDRESS SELECT
I
Symbol
2
s
C BUS INTERFACE
To detect a short across the load or an open
load, a subsonic current pulse is generated. The
information related to the status of the outputs is
measured and memorized at the top of the
current pulse (tm in fig.1). The current is
sourced by the positive pins (CH1+,...CH5+)
and it is sunk by the corresponding negative
pins (CH1-,...CH5-).
Anop
V
V
Tdel
f
V
Aol
V
V
= 14.4V; T
SCL
ADD
SAT
sat
IH
IL
Open load det. (voltage across
the sensing resistor. Below this
limit the Aux pin is considered in
Open Load condition)This
condition must be true for a time
higher than Tdel
Normal Operation det. (Voltage
across the sensing resistor.
Within these limits the load
resistance connected to the Aux
pin is considered correct)
Acquisition time delay - The fault
is considered true if the fault
condition are present for more
than Tdel without interruption
Saturation voltage on pin 5
Voltage on pin 4
Clock Frequency
Input Low Voltage
Input High Voltage
Sat Voltage at pin 2
amb
= 25°, unless otherwise specified.)
Parameter
High side driver ON
Sink Current at Pin 5 = 1mA
Address 0100010X
Address 0100011X
Sink Current at Pin 2 = 5mA
Test Condition
Figure 1.
I
SOURCE
I(mA)
I
SINK
t
m
0.125
Min.
3
3
D97AU571
Typ.
2
0.085
Max.
t
400
0.5
1.5
1.5
1.5
s
1
5
TDA7476
Unit
KHz
V
V
V
V
V
V
V
V
s
5/19
t
(ms)