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PDF 7464 Data sheet ( Hoja de datos )
| Número de pieza | 7464 | |
| Descripción | DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SRS SURROUND SOUND AND VOICE CANCELLER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 7464 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
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TDA7464
DIGITALLY CONTROLLED AUDIO PROCESSOR WITH
SRS SURROUND SOUND AND VOICE CANCELLER
The Device incorporates the SRS
(Sound Retrieval System) under
licence from SRS Labs, Inc.
4 STEREO INPUTS
INPUT ATTENUATION CONTROL IN 0.5dB
STEP
TREBLE MIDDLE AND BASS CONTROL
VOICE CANCELLER IS AVAILABLE
STEREO SRS SURROUND SOUND WITH
CENTER & SPACE CONTROL IS AVAILABLE
THREE STANDARD SURROUND MODES
ARE AVAILABLE:
- MUSIC IN 4 DIFFERENT SELECTABLE
RESPONSES
- MOVIE AND SIMULATED IN 256
DIFFERENT SELECTABLE RESPONSES
2 SPEAKERS OUTPUTS
- INDEPENDENT ATTENUATORS IN 1dB
STEP FOR BALANCE FACILITY
- ZERO CROSSING ATTENUATION AVAILABLE
- INDEPENDENT MUTE FUNCTION
2 RECORD OUTPUTS
- INDEPENDENT ATTENUATORS IN 1dB
STEP FOR BALANCE FACILITY
- MUX AVAILABLE FORPROCESSES SIGNAL
SELECTION
- INDEPENDENT MUTE FUNCTION
ALL FUNCTIONS PROGRAMMABLE VIA SE-
RIAL BUS
DESCRIPTION
The TDA7464 is a volume tone (bass middle and
treble) balance (Left/Right) processors with stereo
SRS and voice canceller for quality audio applica-
tions in car radio, Hi-Fi, TV systems.
It reproduces SRS (Sound Retrieval System)
sound by external components and surround
sound by using phase shifters and a signal ma-
trix. The AC signal setting is obtained by resistor
networks and switches combined with operational
amplifiers according to the SRS laboratories
TQFP44
ORDERING NUMBER: TDA7464
PIN CONNECTION
LP1
HP1
HP2
NETW1
NETW2
VAR_L
BASSO_L
VAR_R
BASSO_R
BASS_LO
BASS_LI
44 43 42 41 40 39 38 37 36 35 34
1 33
2 32
3 31
4 30
5 29
6 28
7 27
8 26
9 25
10 24
11 23
12 13 14 15 16 17 18 19 20 21 22
R_IN1
VREFOUT
L_IN1
L_IN2
L_IN3
L_IN4
RECOUT_L
RECOUT_R
L_OUT
R_OUT
DIG_GND
D96AU483C
specification. Control of all the functions is ac-
complished by serial bus.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained.
February 1998
1/21
1 page  
TDA7464
ELECTRICAL CHARACTERISTICS (continued)
Symbol
RMON1
Parameter
Simulated R Output 1
RMON2 Simulated R Output 2
RMON3 Simulated R Output 3
RLP1
RHPI
RL PF
Low Pass Filter Resistance
High Pass Filter Resistance
LP Pin Impedance
Test Condition
Simulated Mode, EffectCtrl = -6dB
Input signal of 250Hz,
1.4 Vp-p, Rin and Lin →Rout
Simulated Mode, EffectCtrl = -6dB
Input signal of 1kHz,
1.4 Vp-p, Rin and Lin →Rout
Simulated Mode, EffectCtrl = -6dB
Input signal of 3.6kHz,
1.4 Vp-p, Rin and Lin → Rout
STANDARD SURROUND SOUND EFFECT CONTROL
CRANGE Control Range
SSTEP
Step Resolution
SURROUND SOUND MATRIX PHASE
RPS10 Phase Shifter 1: D1 = 0, D0 = 0
RPS11
Phase Shifter 1: D1 = 0, D0 = 1
RPS12 Phase Shifter 1: D1 = 1, D0 = 0
RPS13 Phase Shifter 1: D1 = 1, D0 = 1
RPS20 Phase Shifter 2: D3 = 0, D2 = 0
RPS21 Phase Shifter 2: D3 = 0, D2 = 1
RPS22
Phase Shifter 2: D3 = 1, D2 = 0
RPS23 Phase Shifter 2: D3 = 1, D2 = 1
RPS30
Phase Shifter 3: D5 = 0, D4 = 0
RPS31 Phase Shifter 3: D5 = 0, D4 = 1
RPS32 Phase Shifter 3: D5 = 1, D4 = 0
RPS33 Phase Shifter 3: D5 = 1, D4 = 1
RPS40 Phase Shifter 4: D7 = 0, D6 = 0
RPS41 Phase Shifter 4: D7 = 0, D6 = 1
RPS42 Phase Shifter 4: D7 = 1, D6 = 0
RPS43
Phase Shifter 4: D7 = 1, D6 = 1
SRS SURROUND SOUND MATRIX
Min.
7.5
45
7.5
- 21
8.8
10.6
13.4
28
4.2
5.1
6.3
13.7
9
10.9
13.6
29.3
9
10.9
13.6
29.3
CENTER
StepC
SPACE
StepS
PERSP1
SRS Control Range
Center Step Resolution
SRS Space Control Range
Space Step Resolution
Perspective 1
PERSP2 Perspective 2
L+R L+ R SRS Curve
L, R L, R SRS Curve
-31
Input Signal of 125Hz
SPACE = 0dB, CENTER = MUTE
Rin = GND; Lin → ROUT
Input Signal of 2.15KHz
SPACE = 0dB, CENTER = MUTE
Rin = GND; Lin → ROUT
SPACE = MUTE, CENTER =0dB
Rin = GND; Lin → ROUT
SPACE = MUTE,
CENTER = MUTE
Rin = GND; Lin → LOUT
Lin = GND; Rin → ROUT
Typ. Max.
– 4.5
3.8
– 20
10 12.5
60 75
10 12.5
-6
1
11.8 14.8
14.1 17.6
17.9 22.4
37.3 46.6
5.6 7
6.8 8.5
8.4 10.5
18.3 22.9
12.1 15.1
14.5 18.1
18.1 22.6
39.1 48.9
12.1 15.1
14.5 18.1
18.1 22.6
39.1 48.9
0
1
-31 0
1
12
0
-8.5
-13.4
Unit
dB
dB
dB
KΩ
KΩ
KΩ
dB
dB
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
dB
dB
dB
dB
dB
dB
dB
dB
5/21
5 Page 
BASS SELECTION
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
10000
10001
10010
10011
10100
10101
10110
10111
11111
11110
11101
11100
11011
11010
11001
11000
TDA7464
BASS
2 dB STEPS
-14
-12
-10
-8
-6
-4
-2
0
0
2
4
6
8
10
12
14
11/21
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet 7464.PDF ] | |
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