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CXA2149 Datasheet

  • CXA2149

  • US Audio Multiplexing Decoder

  • 25頁

  • SONY   SONY

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CXA2149Q
I
2
C-Bus-Compatible Audio/Video Switch
For the availability of this product, please contact the sales office.
Description
The CXA2149Q is a video and audio switch IC
featuring I
2
C bus compatibility for TV鈥檚. The IC has
input pins that are compatible with the SCART
protocols. It offers other features such as an
electronic mute function with switching noise
reduction (zero cross detection), electronic volume
control, automatic SYNC pulse detection, and group
delay control.
Features
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3 CVBS inputs.
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2 CVBS outputs.
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Group delay control on TV and CVIN1.
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SYNC ID on TV and CVIN1.
3 Y/C inputs.
2 Y/C outputs.
6 L/R/2 inputs.
3 L/R/2 outputs.
Mode inputs compatible with the SCART protocol.
3 Y/C mixer circuits.
Audio muting via software control.
External muting input.
Audio switching noise elimination circuit.
Volume adjustment via software control on L/R
channel 3.
Wide band video amplifiers (20 MHz, 鈥? dB).
Wide audio dynamic range (3 Vrms typ)
Serial control via I
2
C bus.
Separate control of video and audio switches.
High impedance maintained by I
2
C lines (SDA,
SCL) even when power is off.
Configurable dual slave address 90/92.
I
2
C bus 5 and 3.3 V compatible.
Absolute Maximum Ratings
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Supply voltage
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Storage temperature
(Ta=25 擄C unless stated)
V
CC
12
V
Tstg
鈥?5 to +150
900
擄C
mW
64 pin QFP (Plastic)
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Allowable power dissipation
P
D
Operating Conditions
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Supply voltage
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Typical supply current
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Operating temperature
V
CC
Topr
9+/鈥?.5
75
鈥?0 to +75
V
mA
擄C
Applications
TV鈥檚
Structure
Bipolar silicon monolithic IC
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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E99946A9Y-TE

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