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Sony Semiconductor Electronic Components Datasheet

CXA1784AS Datasheet

US Audio Multiplexing Decoder

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CXA1784AS pdf
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
42 pin SDIP (Plastic)
for the Zenith TV Multi-channel System and also
corresponds with I2C 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 I2C BUS.
Features
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.
All adjustments are possible through I2C BUS to
allow for automatic adjustment.
Various built-in filter circuits greatly reduce external
parts.
There are two systems for both inputs and outputs,
and each mode control is possible.
Standard I/O Level
Input level
COMPIN (Pin 17)
AUXIN-L/R (Pins 38 and 37)
Output level
TVOUT-L/R (Pins 35 and 34)
LSOUT-L/R (Pins 6 and 5)
245 mVrms
490 mVrms
490 mVrms
490 mVrms
Absolute Maximum Ratings (Ta=25°C)
Supply voltage
VCC
11
Operating temperature Topr –20 to +75
Storage temperature Tstg –65 to +150
Allowable power dissipation
PD 2.2
V
°C
°C
W
Range of Operating Supply Voltage
9±0.5
V
Applications
TV, VCR and other decoding systems for US audio
multiplexing TV broadcasting
Structure
Bipolar silicon monolithic IC
Pin Configuration (Top View)
42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
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.
–1–
E95430A5Z-PK


Sony Semiconductor Electronic Components Datasheet

CXA1784AS Datasheet

US Audio Multiplexing Decoder

No Preview Available !

CXA1784AS pdf
Block Diagram
AUXIN-R 37
AUXIN-L 38
MAININ 13
MAINOUT 14
SUBOUT 19
PLINT 15
STFIL 16
CXA1784AS
PREVOL SURR
BASS
TREB
BASS
TREB
BASS
TREBLE
SURR-VOL
VOL-S
4 SURROUT
VOL-R
5 LSOUT-R
VOL-L
6 LSOUT-L
VOL-R VOL-L
32 VCATC
31 VCAWGT
30 VCAIN
29 VEOUT
28 VETC
27 VEWGT
26 VE
–2–
20 STIN
25 SAPIN
24 SAPOUT
7 SDA
8 SCL
9 DGND
10 SAD
12 IREF
11 VGR


Part Number CXA1784AS
Description US Audio Multiplexing Decoder
Maker Sony Corporation
Total Page 30 Pages
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