Description
The CXA2509AQ is an IC designed for use in car stereo cassette decks. Functions include playback equalizer amplifier and music sensor into a single chip.

FEATUREs
• Few external parts
• Small package (40-pin QFP)
• Same pin configuration as for the Dolby B-C type NR system (CXA2511AQ) and Dolby B type NR system (CXA2510AQ)
• Playback equalizer amplifier and music sensor into a single chip
• FORWARD/REVERSE head select switch
• Two-system (TAPE/AUX) input select switch
• Music signal interval detection level can be set by the external resistors/capacitors (2 modes).
• High-frequency cut-off of the music sensor circuit can be adjusted by the external capacitance.

APPLICATIONs
• Car stereo cassette decks
• Playback-only cassette decks