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PDF TDA7346 Data sheet ( Hoja de datos )
| Número de pieza | TDA7346 | |
| Descripción | DIGITAL CONTROLLED SURROUND SOUND MATRIX | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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TDA7346
DIGITAL CONTROLLED SURROUND SOUND MATRIX
1 STEREO INPUT
THREE INDEPENDENT SURROUND MODES
ARE AVAILABLE MOVIE, MUSIC AND SIMU-
LATED
- MUSIC: 4 SELECTABLE RESPONSES
- MOVIE AND SIMULATED:
256 SELECTABLE RESPONSES
TWO INDEPENDENT INPUT ATTENUATORS
IN 0.31dB FOR BALANCE FACILITY
ALL FUNCTIONS PROGRAMMABLE VIA SE-
RIAL BUS
DESCRIPTION
The TDA7346 reproduces surround sound by us-
ing phase shifters and a signal matrix. Control of
all the functions is accomplished by serial bus.
The AC signal setting is obtained by resistor net-
BLOCK DIAGRAM
SO20
DIP20
ORDERING NUMBER: TDA7346 (DIP20)
TDA7346D (SO20)
works and switches combined with operational
amplifiers.
5.6nF
680nF
LP1 HP1 HP2
100nF
PS1
4.7nF
PS2
22nF
PS3
22nF
PS4
100nF
L-in
100K
100nF
R-in
100K
RLP1 RHP1
R5
R6
-
+
+
RPS1
PS1
90Hz
- SIM
+
MOVIE/
MUSIC
L-R
SUPPLY
LPF
9KHz
RPS2
PS2
4KHz
RPS3
PS3
400Hz
RPS4
PS4
400Hz
MIXING
AMP
PHASE SHIFTER
MUSIC
OFF
MOVIE/SIM
EFFECT
CONTROL
I2C BUS
DECODER
LATCHES
MIXING
AMP
Lout
SCL
SDA
DIG GND
ADDR
REAR
Rout
VS AGND CREF C5
22µF
LP
1.2nF
D94AU122A
February 1997
1/14
1 page  
TDA7346
ELECTRICAL CHARACTERISTICS (continued)
Symbol
AUDIO OUTPUTS
Parameter
Test Condition
Min. Typ.
VOCL
ROUT
VOUT
GENERAL
Clipping Level
Output resistance
DC Voltage Level
d = 0.3%
2 2.5
100 200
3.5 3.8
NO(OFF)
NO(MOV)
Output Noise (OFF)
Output Noise (Movie)
NO(MUS) Output Noise (Music)
NO(MON) Output Noise (Simulated)
d Distorsion
SC Channel Separation
BUS INPUTS
BW = 20Hz to 20KHz
Rout and Lout measurement
Mode =Movie ,
BW = 20Hz to 20KHz
Rout and Lout measurement
Mode = Music ,
BW = 20Hz to 20KHz,
Rout and Lout measurement
Mode = Simulated,
BW = 20Hz to 20KHz
Rout and Lout measurement
Av = 0 ; Vin = 1Vrms
8
30
30
30
0.02
70
VIL Input Low Voltage
VIH Input High Voltage
IIN Input Current
VO Output Voltage SDA
Acknowledge
IO = 1.6mA
3
-5
0.4
Note:
(1) Bass and Treble response: The center frequency and the resonance quality can be choosen by
the external circuitry. A standard first order bass response can be realized by a standard feedback network.
(2) The peak voltage of the two input signals must be less then
(Lin + Rin) peak
•
AVin
<
VS
2
VS:
2
Max. Unit
Vrms
300 Ω
4.1 V
µVrms
µVrms
µVrms
µVrms
0.1 %
dB
1V
V
+5 µA
0.8 V
5/14
5 Page 
PIN: LP
VS
20µA
10K
D94AU206
PIN: CREF
VS
20K
20µA
20K
D94AU208
PIN: PS1
VS
20µA
PS1A
17.95K
D94AU126
PIN: PS3, PS2
VS
TDA7346
20µA
PS3A
PS4A
18.050K
D94AU124
PIN: PS2
VS
20µA
8.465K
PS2A
D94AU125
PIN: LP1
VS
20µA
HP1
10K
D94AU211
11/14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TDA7346.PDF ] | |
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