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參數(shù)資料
| 型號(hào)： | TDA7476 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | CAR RADIO DIAGNOSTIC PROCESSOR |
| 中文描述： | 汽車無線電診斷處理器 |
| 文件頁(yè)數(shù)： | 4/15頁(yè) |
| 文件大?。?/td> | 101K |
| 代理商： | TDA7476 |
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Symbol
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 thanTdel
Aol
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
Anop
Normal Operation det. (Voltage
across the sensing resistor.
Within these limits the load
resistance connected to the Aux
pin is considered correct)
PERMANENT DIAGNOSTIC - ACQUISITION TIME DELAY
Tdel
Acquisition time delay - The
fault is considered true if the
fault condition are present for
more than Tdel without
interruption
PERMANENT DIAGNOSTIC - WARNING PIN
Vsat
Saturation voltage on pin 5
ADDRESS SELECT
V
ADD
Voltage on pin 4
Parameter
Test Condition
Min.
Typ.
Max.
Unit
High side driver ON
0.75
V
0.085
V
0.125
0.5
V
2
s
Sink Current at Pin 5 = 1mA
1
V
Address 0100010X
Address 0100011X
1.5
5
V
V
3
I
2
C BUS INTERFACE
f
SCL
V
IL
V
IH
V
SAT
Clock Frequency
Input Low Voltage
InputHigh Voltage
Sat Voltage at pin 2
400
1.5
KHz
V
V
V
3
Sink Current at Pin 2 = 5mA
1.5
ELECTRICALCHARACTERISTICS
(continued)
WORKINGPRINCIPLES
Turn-on diagnostic - CH1,CH2, CH3,CH4, CH5 - Shortedload/open load detection
To detect a short across the load or an open load, a subsonic current pulse is generated. The infor-
mation related to the status of the outputs are 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
correspondingnegativepins (CH1-,...CH5-).
Figure 1.
Isink
and
Isource
are dependingon the externalresistor
Rcs
. The minimum allowed value for Rcs is
1.65KOhm.The relationshipamong Isink, Isource and Rcs is the following:
Isink = (3.3/Rcs) x 11
Isource= 1.5 x Isink
t
m
t
s
t
(ms)
I
SOURCE
I
SINK
I(mA)
D97AU571
TDA7476
4/15
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PDF描述 |
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| TDA7478 | TERMINAL |
| TDA7478D | TERMINAL |
| TDA7479 | SINGLE CHIP RDS DEMODULATOR FILTER |
| TDA7479D | SINGLE CHIP RDS DEMODULATOR FILTER |
| TDA7480 | 10W MONO CLASS-D AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA7476_01 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CAR RADIO DIAGNOSTIC PROCESSOR |
| TDA7476013TR | 功能描述:處理器 - 專門應(yīng)用 CAR RADIO DIAGNOSTIC RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432 |
| TDA7478 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SINGLE CHIP RDS DEMODULATOR |
| TDA7478_11 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Single chip RDS demodulator |
| TDA7478D | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SINGLE CHIP RDS DEMODULATOR |
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