參數(shù)資料
型號(hào): 7464
廠商: 意法半導(dǎo)體
英文描述: DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SRS SURROUND SOUND AND VOICE CANCELLER
中文描述: 數(shù)控式SRS的環(huán)繞聲和消音器的音頻處理器
文件頁(yè)數(shù): 1/21頁(yè)
文件大?。?/td> 174K
代理商: 7464
TDA7464
DIGITALLY CONTROLLED AUDIO PROCESSOR WITH
SRS SURROUND SOUND AND VOICE CANCELLER
4 STEREOINPUTS
INPUT ATTENUATION CONTROL IN 0.5dB
STEP
TREBLEMIDDLE AND BASS CONTROL
VOICE CANCELLER IS AVAILABLE
STEREO SRS SURROUND SOUND WITH
CENTER & SPACECONTROL IS AVAILABLE
THREE STANDARD SURROUND MODES
ARE AVAILABLE:
- MUSIC IN 4 DIFFERENT SELECTABLE
RESPONSES
- MOVIE AND SIMULATED IN 256
DIFFERENTSELECTABLE RESPONSES
2 SPEAKERSOUTPUTS
- INDEPENDENT ATTENUATORS IN 1dB
STEPFOR BALANCEFACILITY
- ZEROCROSSINGATTENUATIONAVAILABLE
- INDEPENDENT MUTE FUNCTION
2 RECORD OUTPUTS
- INDEPENDENT ATTENUATORS IN 1dB
STEPFOR BALANCEFACILITY
- MUXAVAILABLE FORPROCESSESSIGNAL
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) processorswith stereo
SRS and voicecanceller for quality audio applica-
tionsin 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
specification. Control of all the functions is ac-
complishedby serial bus.
Thanks to the used BIPOLAR/CMOSTechnology,
Low Distortion, Low Noise and DC stepping are
obtained.
February 1998
ORDERING NUMBER:
TDA7464
TQFP44
1
2
3
5
6
4
7
8
9
10
17
11
18 19 20 21 22
44 43 42 41
39
40
38 37 36 35 34
28
27
26
24
23
25
33
32
31
29
30
VAR_L
NETW2
NETW1
HP1
LP1
HP2
BASS_LI
BASS_LO
BASSO_R
BASSO_L
VAR_R
B
B
M
M
M
M
T
T
A
S
S
L
P
P
P
V
S
P
C
R
R
R
L
L_IN4
RECOUT_L
RECOUT_R
R_OUT
DIG_GND
L_OUT
R_IN1
L_IN1
L_IN2
L_IN3
VREFOUT
D96AU483C
12 13 14 15 16
PIN CONNECTION
The Device incorporates the SRS
(Sound Retrieval System) under
licence fromSRS Labs,Inc.
1/21
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