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Sony Semiconductor Electronic Components Datasheet

CXA2074S Datasheet

US Audio Multiplexing Decoder

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CXA2074Q/S
US Audio Multiplexing Decoder
Description
The CXA2074Q/S is an IC designed as a decoder
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 three systems for inputs and two
systems for outputs, and each mode control is
possible.
Standard I/O Level
[( ) is the pin No. for the CXA2074S.]
Input level
COMPIN (Pin 17)
245mVrms
AUX1-L/R (Pins 36 and 35) 490mVrms
AUX2-L/R (Pins 38 and 37) 490mVrms
Output level
LPOUT-L/R (Pins 40 and 39) 490mVrms
LSOUT-L/R (Pins 8 and 7)
490mVrms
CXA2074Q
48 pin QFP (Plastic)
CXA2074S
42 pin SDIP (Plastic)
Absolute Maximum Ratings (Ta = 25°C)
Supply voltage
VCC 11
V
Operating temperature Topr –20 to +75 °C
Storage temperature Tstg –65 to +150 °C
Allowable power dissipation
PD 0.6 (48 pin QFP) W
2.2 (42 pin SDIP) 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
A license of the dbx-TV noise reduction system is
required for the use of this device.
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–
E96843B86


Sony Semiconductor Electronic Components Datasheet

CXA2074S Datasheet

US Audio Multiplexing Decoder

No Preview Available !

Pin Configuration (Top View)
CXA2074Q
CXA2074Q/S
36 35 34 33 32 31 30 29 28 27 26 25
AUX2-R 37
AUX2-L 38
LPOUT-R 39
LPOUT-L 40
LPIN-R 41
LPIN-L 42
NC 43
BASSR1 44
BASSR2 45
BASSL1 46
BASSL2 47
TRER 48
24 SAPOUT
23 NOISETC
22 STIN
21 SUBOUT
20 NC
19 VCC
18 SAPTC
17 GND
16 IREF
15 VGR
14 COMPIN
13 PLINT
1 2 3 4 5 6 7 8 9 10 11 12
CXA2074S
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
–2–


Part Number CXA2074S
Description US Audio Multiplexing Decoder
Maker Sony Corporation
Total Page 30 Pages
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