CXA1878Q Overview
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 bination with two CXA1417S/Q pletes a Dolby B-C-S type NR stereo system.
CXA1878Q 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 amplifier gain (approximately ±4dB variable)
- Playback deck A/B select switch
- Recording volume control