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TDA7476 Datasheet(PDF) 1 Page - STMicroelectronics

No. de pieza TDA7476
Descripción Electrónicos  CAR RADIO DIAGNOSTIC PROCESSOR
Download  19 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7476 Datasheet(HTML) 1 Page - STMicroelectronics

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TDA7476
April 2001
s
WIDE OPERATING VOLTAGE RANGE
s
ST-BY FUNCTION (C-MOS)
s
LOW QUIESCENT ST-BY CURRENT
CONSUMPTION
s
I2C BUS INTERFACE WITH 2 EXTERNALLY
SELECTABLE ADDRESSES
s
UP TO 5 BTL EQUIVALENT INPUTS FOR
FAULT DETECTION IN THE AUDIO
CHANNELS
- short to GND
- short to Vs
- short across the load (at turn-on)
- open load (at turn-on)
s
2 AUX INPUTS FOR FAULT DETECTION IN
THE ANTENNA AND BOOSTERS SUPPLY
LINE- short to GND- open load
s
WARNING PIN FUNCTION (interrupt facility)
ACTIVATED IN THE FOLLOWING
CONDITION:
- audio channel shorted to VS
- audio channel shorted to GND
- aux input shorted to GND
s
NOISE FREE DIAGNOSTICS OPERATION
s
PROTECTORS
s
LOAD DUMP VOLTAGE
s
OPEN GND
s
REVERSED BATTERY
s
ESD
DESCRIPTION
The car radio diagnostic processor is an interface
chip in BCD Technology intended for car radio appli-
cations. It is able to detect potential faults coming
from any misconnection in the car radio or in the har-
ness when installing the set.
The device is able to reveal any fault in the loud-
speaker lines and in the antenna and booster supply
lines, providing a proper output signal (I2C bus com-
patible) in order to disable the ICs under fault and/or
to alert the micro-controller by means of warning
messages.
SO-24
ORDERING NUMBER: TDA7476
CAR RADIO DIAGNOSTIC PROCESSOR
PIN CONNECTION (Top view)
GND
SDA
SCL
ADD
W
AUX1 IN
AUX1 OUT
AUX2 IN
AUX2 OUT
CH1-
CH2-
CH2+
CH3-
CH3+
CH4-
CH4+
CH5+
CH5-
1
3
2
4
5
6
7
8
9
22
21
20
19
18
16
17
15
23
10
24
5V
CH1+
D97AU570A
ST-BY
T-CAP
11
14
13
12
VS
CSR
MULTIPOWER BCD TECHNOLOGY


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