CXA2054S Datasheet, PDF (1/38 Pages) Sony Corporation – US Audio Multiplexing Decoder

US Audio Multiplexing Decoder
CXA2054S
Description
The CXA2054S 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.
48 pin SDIP (Plastic)
Features
• Audio multiplexing decoder, dbx noise reduction
decoder and sound processor (surround, volume
limiter, bass · treble, volume) 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 channel external inputs for LSOUT
outputs.
• Automatic volume control between input sources is
possible through volume limiter.
Standard I/O Level
• Input level
COMPIN (Pin 19)
AUX1-L/R (Pins 40 and 39)
AUX2-L/R (Pins 42 and 41)
SURRIN (Pin 4)
245 mVrms
490 mVrms
490 mVrms
490 mVrms
Pin Configuration (Top View)
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
2.2
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
• Output level
TVOUT-L/R (Pins 44 and 43)
LSOUT-L/R (Pins 7 and 6)
SURROUT (Pin 5)
490 mVrms
490 mVrms
490 mVrms
∗A license of the dbx-TV noise reduction system is
required for the use this device.
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
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.
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E96Y15B86-TE