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CXA1878Q - Dolby B-C Type Noise Reduction System with Recording/Playback Equalizer Amplifier

General 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.

Key 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.

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CXA1878Q 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.