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CXA1784AS Datasheet

  • CXA1784AS

  • US Audio Multiplexing Decoder

  • 38頁

  • SONY   SONY

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CXA1784AS
US Audio Multiplexing Decoder
For the availability of this product, please contact the sales office.
Description
The CXA1784AS is an IC designed as a decoder
for the Zenith TV Multi-channel System and also
corresponds with I
2
C BUS. Functions include stereo
demodulation, SAP (Separate Audio Program)
demodulation, dbx noise reduction and sound
processor. Various kinds of filters are built in while
adjustment, mode control and sound processor
control are all executed through I
2
C BUS.
Features
鈥?/div>
Audio multiplexing decoder, dbx noise reduction
decoder and sound processor are all included in a
single chip. Almost any sort of signal processing is
possible through this IC.
鈥?/div>
All adjustments are possible through I
2
C BUS to
allow for automatic adjustment.
鈥?/div>
Various built-in filter circuits greatly reduce external
parts.
鈥?/div>
There are two systems for both inputs and outputs,
and each mode control is possible.
Standard I/O Level
鈥?/div>
Input level
COMPIN (Pin 17)
AUXIN-L/R (Pins 38 and 37)
鈥?/div>
Output level
TVOUT-L/R (Pins 35 and 34)
LSOUT-L/R (Pins 6 and 5)
Pin Configuration
(Top View)
TVOUT-R
SURRTC
AUXIN-R
VCAWGT
BASSL1
VCATC
VEOUT
VCAIN
VEWGT
SAPOUT
BASSR1
VETC
SAPIN
NOISETC
BASSR2
AUXIN-L
TVOUT-L
42 pin SDIP (Plastic)
Absolute Maximum Ratings
(Ta=25擄C)
11
鈥?/div>
Supply voltage
V
CC
鈥?/div>
Operating temperature Topr
鈥?/div>
Storage temperature
Tstg
鈥?/div>
Allowable power dissipation
P
D
鈥?0 to +75
鈥?5 to +150
2.2
V
擄C
擄C
W
Range of Operating Supply Voltage
9鹵0.5
V
Applications
TV, VCR and other decoding systems for US audio
multiplexing TV broadcasting
Structure
Bipolar silicon monolithic IC
245 mVrms
490 mVrms
490 mVrms
490 mVrms
ITIME
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
VE
26
25
24
23
GND
20
NC
22
1
BASSL2
2
TRER
3
TREL
4
SURROUT
5
LSOUT-R
6
LSOUT-L
7
SDA
8
SCL
9
DGND
10
11
12
13
14
15
16
17
18
19
21
PLINT
SUBOUT
IREF
STFIL
MAININ
COMPIN
STIN
SAD
MAINOUT
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
鈥?鈥?/div>
SAPTC
VGR
V
CC
E95430A5Z-PK

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