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PDF TDA7462D Data sheet ( Hoja de datos )
| Número de pieza | TDA7462D | |
| Descripción | DUAL AUDIOPROCESSOR WITH COMPANDER AND SUBWOOFER OUTPUT | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TDA7462D (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
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® TDA7462
DUAL AUDIOPROCESSOR WITH COMPANDER
AND SUBWOOFER OUTPUT
FULLY INTEGRATED AUDIOPROCESSOR
5 STEREO + 1 MONO INPUTS
FOUR INDEPENDENT SPEAKER OUTPUTS
DYNAMIC COMPRESSION STAGE FOR CD
SUBWOOFER OUTPUT
SOFTSTEP FEATURE FOR VOLUME
VOICE-BAND FILTER
DIRECT MUTE AND SOFTMUTE
PAUSE DETECTOR
FULLY PROGRAMMABLE BY I2C BUS IN-
TERFACE
SO28
ORDERING NUMBER: TDA7462D
DESCRIPTION
The TDA7462 is a high performance audioproc-
essor with fully integrated audio filters. The digi-
tal control allows the programming of all filter
characteristics in a wide range without the need
of external components. New innovative features
are included , a dynamic compression stage to
BLOCK DIAGRAM
optimize audio response of CD sources an addi-
tional output channel for subwoofer and a sepa-
rate source selector for rear channel. The use of
a dedicated BICMOS process makes signal proc-
essing very linear thus achieving low distortion
and low noise figures.
CD R+ CD L- CD L+
865
CD R-
PDR
PDGND
PDL
SE1L
SE1R
SE2R
SE2L
MD+
MD-
SEM/SE3L
SE3R
7
9
10 FRONT
11 SELECTOR
1 INPUT
2
MULTIPLEXER
+ MIXING-STAGE
13
12 REAR
3 SELECTOR
4
28
27
IN-GAIN +
AUTO ZERO
LOUDNESS
VOLUME
COMPANDER
IN-GAIN
MUTE
26
SOFT
MUTE
TREBLE
LOUDNESS
BASS
VOICE-BANDPASS
HP LP
SUBWOOFER
LP
MONO
FADER
PAUSE 23 PAUSE
DETECT.
BEEP
SUPPLY
16
VS
15
GND
14
CREF
DIGITAL CONTROL
FRONT 22
FADER
OUT LF
FRONT 21
FADER
OUT RF
REAR 19 OUT RR
FADER
REAR
FADER
20
OUT RL
18
SUBWOOFER
OUT
17
SUBOUT+
SUBOUT-
I2C BUS
25
SDA
24
SCL
D96AU864
November 2001
1/25
1 page  
TDA7462
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
SOFT MUTE
AMUTE
Mute Attenuation
TD Delay Time
VTHlow
Low Threshold for SM Pin1
VTHhigh High Threshold for SM Pin
RPD Internal Pull-up Resistor
SOFT STEP
TSW Switch Time
BASS CONTROL
CRANGE Control Range
ASTEP
Step Resolution
fC Center Frequency
QBASS
Quality Factor
DCGAIN Bass-Dc-Gain
TREBLE CONTROL
CRANGE Control Range
ASTEP
Step Resolution
fC Center Frequency
SPEAKER ATTENUATORS
CRANGE Control Range
ASTEP
Step Resolution
AMUTE Output Mute Attenuation
EE Attenuation Set Error
VDC DC Steps
1) The SM pin is active low (Mute = 0)
Test Condition
Min.
80
T1
T2
T3 20
T4 70
2.5
70
fC1
fC2
fC3
fC4
Q1
Q2
Q3
Q4
DC = off
DC = on
TSW1
TSW2
TSW3
TSW4
TSW5
TSW6
TSW7
TSW8
±14
0.5
54
63
72
90
0.9
1.1
1.3
1.8
-1
4
±13
1
fC1 8
fC2 10
fC3 12
fC4 14
Adjacent Attenuation Steps
-53
0.5
80
-2
Typ.
100
0.48
0.96
30.7
123
100
0.16
0.32
0.64
1.28
2.56
5.12
10.2
20.4
±15
1
60
70
80
100
1
1.25
1.5
2
0
4.4
±14
2
10
12.5
15
17.5
50
1
90
0.1
Max.
1
2
50
170
1
130
±16
1.5
66
77
88
110
1.1
1.4
1.7
2.2
+1
6
±15
3
12
15
18
21
-47
2
2
5
Unit
dB
ms
ms
ms
ms
V
V
KΩ
ms
ms
ms
ms
ms
ms
ms
ms
dB
dB
Hz
Hz
Hz
Hz
dB
dB
dB
dB
KHz
KHz
KHz
KHz
dB
dB
dB
dB
mV
5/25
5 Page 
TDA7462
FILTER CHARACTERISTICS (BASS, TREBLE, VOICE-BAND)
Figure 8. Bass Control @ fc = 80Hz, Q = 1
15.0
10.0
5.0
0.0
-5.0
-10.0
-15.0
10.0
100.0
1.0K
10.0K
Figure 10. Bass Quality factors @ Gain =
14dB, fc = 80Hz
15.0
12.5
10.0
7.5
5.0
2.5
0.0
10.0
100.0
1.0K
10.0K
Figure 12. Treble Control @ fc = 17.5KHz
15.0
10.0
5.0
0.0
-5.0
-10.0
-15.0
10.0
100.0 1.0K
10.0K
Figure 9. Bass Center @ Gain = 14dB, Q = 1
15.0
12.5
10.0
7.5
5.0
2.5
0.0
10.0
100.0
1.0K
10.0K
Figure 11. Bass normal and DC Mode @ Gain
= 14dB, fc = 80Hz
15.0
12.5
10.0
7.5
5.0
2.5
0.0
10.0
100.0
1.0K
10.0K
Note: The center frequency, Q and DC-mode can be set
independently.
Figure 13. Treble Center Frequencies
@ Gain = 14dB
15.0
12.5
10.0
7.5
5.0
2.5
0.0
10.0
100.0 1.0K
10.0K
11/25
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet TDA7462D.PDF ] | |
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