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CXA1878Q Datasheet(PDF) 1 Page - Sony Corporation

Part No. CXA1878Q
Description  Dolby B-C Type Noise Reduction System with Recording/Playback Equalizer Amplifier
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Maker  SONY [Sony Corporation]
Homepage  http://www.sony.co.jp
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CXA1878Q Datasheet(HTML) 1 Page - Sony Corporation

 
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CXA1878Q
64 pin QFP (Plastic)
E95933A5Z-PK
Dolby∗ B-C Type Noise Reduction System with Recording/Playback Equalizer Amplifier
Description
The CXA1878Q is a bipolar IC with a built-in Dolby
B-C type noise reduction system (NR), Dolby S type
select switch, recording/playback equalizer, electronic
volume, and bias control circuit.
Use of this IC in combination with two CXA1417S/Q
completes a Dolby B-C-S type NR stereo system.
Features
• Dolby B-C type NR
• Built-in filter required for recording/playback equalizer
amplifiers
• Recording mute function
(requiring only an external time constant circuit to
implement soft mute)
• Fade in/out DC controllable
• NORM/CrO2/METAL tape mode switching function
• NORM/HIGH tape speed switching function
• DC controllable for recording level calibration
(approximately ±6dB variable)
• DC controllable for high frequency equalizer
amplifier gain (approximately ±4dB variable)
• Playback deck A/B select switch
• Recording volume control
• Bias control circuit
• Meter circuit
Applications
Recording/playback equalizer amplifier for stereo
analog cassette decks
(Applicable to ALPS ELECTRIC CO., LTD.
HADKH55 series heads)
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings
• Supply voltage
VCC
17
V
• Operating temperature
Topr –20 to +75 °C
• Storage temperature
Tstg –65 to +150 °C
• Allowable power dissipation PD
1020
mW
Operating Conditions
Supply voltage
(VCC VEE)
±6.5 to 8.0
V
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.
∗ These ICs are available only to the licensees of Dolby Laboratories Licensing Corporation from whom licensing and applications
information may be obtained.
∗ “Dolby” and the double D symbols are trade marks of Dolby Laboratories Licensing Corporation.


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