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PDF 7442 Data sheet ( Hoja de datos )
| Número de pieza | 7442 | |
| Descripción | TONE CONTROL AND SURROUND DIGITALLY CONTROLLED AUDIO PROCESSOR | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 7442 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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TDA7442
® TDA7442D
TONE CONTROL AND SURROUND
DIGITALLY CONTROLLED AUDIO PROCESSOR
4 STEREO INPUTS
INPUT ATTENUATION CONTROL IN 0.5dB
STEP
TREBLE AND BASS CONTROL
TWO SURROUND MODE AVAILABLE WITH
4 SELECTABLE RESPONSES:
- MUSIC
- SIMULATED STEREO
TWO SPEAKER ATTENUATORS:
- 2 INDEPENDENT SPEAKER CONTROLS
IN 1dB STEPS FOR BALANCE FACILITY
- INDEPENDENT MUTE FUNCTION
ALL FUNCTIONS PROGRAMMABLE VIA SE-
RIAL BUS
2 MONITOR OUTPUT (ONLY FOR TDA7442)
DESCRIPTION
The TDA7442/42D is volume tone (bass and
treble) balance (Left/Right) processors for quality
audio applications in TV and Hi-Fi systems.
It reproduces surround sound by using a pro-
PIN CONNECTIONS
SO28
SDIP32
ORDERING NUMBER: TDA7442D (SO28)
TDA7442 (SDIP32)
grammable phase shifter. Control of all the func-
tions is accomplished by serial bus.
The AC signal setting is obtained by resistor net-
works and switches combined with operational
amplifiers.
Thanks to the BIPOLAR/CMOS Technology used,
Low Distortion, Low Noise and DC stepping are
obtained.
R_IN3
R_IN2
R_IN1
L_IN1
L_IN2
L_IN3
L_IN4
MUXOUTL
IN(L)
MUXOUT(R)
IN(R)
BIN(R)
BOUT(R)
BIN(L)
1 28
2 27
3 26
4 25
5 24
6 23
7 22
8 21
9 20
10 19
11 18
12 17
13 16
14 15
D98AU948
SO28
R_IN4
LOUT
ROUT
AGND
VS
CREF
SDA
SCL
DIG-GND
TREBLE(R)
TREBLE(L)
PS1
LP
BOUT(L)
January 2001
R-IN2
R-IN1
MONITOR(L)
MONITOR(R)
L-IN1
L-IN2
L-IN3
L-IN4
MUXOUT(L)
IN(L)
MUXOUT(R)
N.C.
IN(R)
BIN(R)
BOUT(R)
BIN(L)
1 32
2 31
3 30
4 29
5 28
6 27
7 26
8 25
9 24
10 23
11 22
12 21
13 20
14 19
15 18
16 17
D01AU1247
SDIP32
R-IN3
R-IN4
L-OUT
R-OUT
AGND
VS
CREF
SDA
SCL
DIGGND
TREBLE-R
N.C.
TREBLE-L
PS1
LP
BOUT(L)
1/16
1 page  
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
SPEAKER ATTENUATORS
Crange
Control Range
SSTEP
Step Resolution
EA Attenuation set error
VDC
AMUTE
RVEA
DC Steps
Output Mute Condition
Input Impedance
AUDIO OUTPUTS
NO(OFF) Output Noise (OFF)
NO(MUS) Output Noise (Music)
NO(PSEUDO) Output Noise (Pseudo Stereo)
d
SC
VOCL
ROUT
VOUT
Distorsion
Channel Separation
Clipping Level
Output Resistance
DC Voltage Level
MONITOR OUTPUTS
d Distorsion
SC
VOCL
Channel Separation
Clipping Level
ROUT
Output Resistance
VOUT
DC Voltage Level
BUS INPUTS
VIL Input Low Voltage
VIH Input High Voltage
IIN Input Current
VO Output Voltage SDA
Acknowledge
Test Condition
Av = 0 to -20dB
Av = -20 to -79dB
adjacent att. steps
Output Mute, Flat
BW = 20Hz to 20KHz
Mode = Music ,
BW = 20Hz to 20KHz,
Mode = Pseudo Stereo
BW = 20Hz to 20KHz,
Av = 0 ; Vin = 1Vrms
d = 0.3%
Av = 0 ; Vin = 1Vrms
d = 0.3%
IO = 1.6mA
TDA7442 - TDA7442D
Min. Typ. Max. Unit
79 dB
-0.5 1 1.5 dB
-1.5 0
1.5 dB
-3 0 2 dB
-3 0 3 mV
+70 100
dB
21 30 39 KΩ
4 µVrms
5 µVrms
30 mVrms
30 mVrms
0.01 0.1
%
70 90
dB
2 2.5
Vrms
10 30 50 Ω
3.8 V
0.01 0.1
%
70 90
dB
2 2.5
Vrms
20 50 70 Ω
4.5 V
1V
3V
-5 +5 µA
0.4 V
5/16
5 Page 
TDA7442 - TDA7442D
TREBLE SELECTION
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
00001110
00011110
00101110
00111110
01001110
01011110
01101110
01111110
11111110
11101110
11011110
11001110
10111110
10101110
10011110
10001110
TREBLE
2 dB STEPS
-14
-12
-10
-8
-6
-4
-2
0
0
2
4
6
8
10
12
14
INPUT SELECTION
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0 INPUT MULTIPLEXER
X
000
IN2
X
010
IN3
X
100
IN4
X
110
IN1
POWER ON RESET
BASS
TREBLE
SURROUND & OUT CONTROL+ EFFECT CONTROL
SPEAKER ATTENUATION L &R
INPUT ATTENUATION
INPUT
2dB
0dB
OFF + FIX + MAX ATTENUATION
MUTE
MAX ATTENUATION
IN1
11/16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet 7442.PDF ] | |
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