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PDF TDA7400D Data sheet ( Hoja de datos )
| Número de pieza | TDA7400D | |
| Descripción | ADVANCED CAR SIGNAL PROCESSOR | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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® TDA7400D
ADVANCED CAR SIGNAL PROCESSOR
FULLY INTEGRATED SIGNAL PROCESSOR
OPTIMIZED FOR CAR RADIO APPLICA-
TIONS
FULLY PROGRAMMABLE BY I2C BUS
INCLUDES AUDIOPROCESSOR, STEREO -
)DECODER WITH NOISE BLANKER AND
t(sMULTIPATH DETECTOR
PROGRAMMABLE ROLL-OFF COMPENSA-
cTION
duNO EXTERNAL COMPONENTS
ProDESCRIPTION
teThe TDA7400D is the newcomer of the CSP fam-
ily introduced by TDA7460/61. It uses the same
leinnovative concepts and design technologies al-
olowing fully software programmability through I2C
sbus and overall cost optimisation for the system
bdesigner.
OThe device includes an audioprocessor with con-
-figurable inputs and absence of external compo-
)nents for filter settings, a last generation
t(sBLOCK DIAGRAM
SO28
ORDERING NUMBER: TDA7400D
stereodecoder with multipath detector and a so-
phisticated stereoblend and noise cancellation
circuitry.
Strength points of the CSP approach are flexibility
and overall cost/room saving in the application,
combined with high performances.
roducCDL CDGND CDR
765
lete P10
AM
soCassR
bCassL
4
3
INPUT
MULTIPLEXER
+
AUTO ZERO
O8
SMUTE
18
ACOUTL ACOUTR
28 27
VOLUME
SOFT
MUTE
TREBLE
BASS
DIGITAL CONTROL
I2C BUS
MONO-FADER
MONO-FADER
MONO-FADER
MONO-FADER
24
OUT LR
26
OUT LF
23
OUT RR
25
OUT RF
19
SCL
20
SDA
16
Ph- MUXR
MUX R
9 15
Ph+ MUXL
MUX L
FM_R
FM_L
11
MPX
80KHz
LP
PILOT
CANCELLATION
DEMODULATOR
+ STEREO ADJUST
+ STEREO BLEND
25KHz
LP
S&H
HIGH
CUT
VDD
VREF
22
1
SUPPLY
21 2
GND CREF
PLL
PIL
DET
MULTIPATH-
DETECTOR
FM NOISE
BLANKER
13
MPIN
14
MPOUT
PULSE
FORMER
D
A
12
LEVEL
QUAL.
17
QUAL
D99AU1046
October 2003
1/28
1 page  
TDA7400D
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
VOLUME CONTROL
GMAX
Max Gain
13 15 17 dB
AMAX
Max Attenuation
70 79
dB
ASTEP
Step Resolution
0.5 1 1.5 dB
EA Attenuation Set Error
G = -20 to 20dB
-1.25
0
1.25 dB
G = -60 to 20dB
-4 0 3 dB
ET Tracking Error
VDC DC Steps
t(s)SOFT MUTE
ucAMUTE
Mute Attenuation
dTD Delay Time
lete ProVTHlow
oVTHhigh
sRPD
Low Threshold for SM Pin1
High Threshold for SM Pin
Internal Pull-up Resistor
bBASS CONTROL
- OCRANGE Control Range
)ASTEP
Step Resolution
t(sfC Center Frequency
ProducQBASS
Quality Factor
ObsoleteDCGAIN Bass-Dc-Gain
Adjacent Attenuation Steps
From 0dB to GMIN
T1
T2
T3
T4
fC1
fC2
fC3
fC4
Q1
Q2
Q3
Q4
DC = off
DC = on
2 dB
0.1 3 mV
0.5 5 mV
80 100
0.48 1
0.96 2
20 40.4 60
200 324 600
1
2.5
70 100 130
dB
ms
ms
ms
ms
V
V
KΩ
±13 ±15 ±17
0.5 1 1.5
54 60 66
63 70 77
72 80 88
90 100 110
(150)(2)
0.9 1 1.1
1.1 1.25 1.4
1.3 1.5 1.7
1.8 2 2.2
-1 0 1
3.5 4.4 5.5
dB
dB
Hz
Hz
Hz
Hz
dB
dB
TREBLE CONTROL
CRANGE Control Range
±13 ±15 ±17
dB
ASTEP
Step Resolution
0.5 1 1.5 dB
fC Center Frequency
fC1
8 10 12 KHz
fC2 10 12.5 15 KHz
fC3 12 15 18 KHz
fC4 14 17.5 21 KHz
1) The SM pin is active low (Mute = 0)
2) See note in Programming Part
5/28
5 Page 
TDA7400D
Figure 3. Fieldstrength Controlled Trigger Adjustment
VPEAK
»3V
MONO
STEREO
2.4V(00)
1.9V(01)
1.4V(10)
)NOISE
ATC_SB OFF (11)
0.9V
ct(snoisy signal
D97AU650
roduMultipath Detector
te PInternal 19kHz band pass filter
leProgrammable band pass and rectifier gain
good signal
E'
two pin solution fully independent usable for
external programming
selectable internal influence on Stereoblend
bsoELECTRICAL CHARACTERISTICS (continued)
- OSymbol
)fCMP
t(sGBPMP
Parameter
Center Frequency of Multipath-
Bandpass
Bandpass Gain
ProducGRECTMP Rectifier Gain
ObsoleteICHMP
Rectifier Charge Current
Test Condition
Min. Typ. Max. Unit
stereodecoder locked on Pilottono
19
KHz
bits D2, D1 configuration byte = 00
bits D2, D1 configuration byte = 10
bits D2, D1 configuration byte = 01
bits D2, D1 configuration byte = 11
bits D7, D6 configuration byte = 00
bits D7, D6 configuration byte = 01
bits D7, D6 configuration byte = 10
bits D7, D6 configuration byte = 11
bit D5 configuration byte = 0
bit D5 configuration byte = 1
6
12
16
18
7.6
4.6
0
off
0.5
1.0
dB
dB
dB
dB
dB
dB
dB
dB
µA
µA
IDISMP
Rectifier Discharge Current
0.5 1 1.5 mA
Quality Detector
Symbol
A
Parameter
Multipath Influence Factor
Test Condition
bit D7 High-Cut byte +
bit D7 Fieldstrength byte +
Min. Typ. Max. Unit
00 0.7
01 0.85
10 1.00
11 1.15
11/28
11 Page | ||
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| PDF Descargar | [ Datasheet TDA7400D.PDF ] | |
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