Description
The CXA1911Q is an IC designed for use in carstereo cassette decks. Functions include Dolby B/C
type noise reduction, playback equalizer amplifier and music sensor into a single chip.

Features
• Few external parts
• Forward/Reverse head switching
• Small package (40-pin QFP)
• Dolby B/C type noise reduction and playback equalizer into a single chip
• Same pin configuration as Dolby B type noise reduction system (CXA1910Q)
• Music sense level can be set by external resistors/capacitors (2 modes).
• High-band cut filter frequency can be adjusted by the external capacitance.

APPLICATIONs
• Car stereo cassette decks
• Cassette decks (playback only)