Dolby∗ B-C Type Noise Reduction System with Playback Equalizer Amplifier
The CXA2511AQ is an IC designed for use in car
stereo cassette decks. Functions include Dolby B-C
type noise reduction (NR) system, playback equalizer
amplifier and music sensor into a single chip.
40 pin QFP (Plastic)
• Few external parts
• Small package (40-pin QFP)
• Same pin configuration as for the Dolby B type NR
system (CXA2510AQ) and no Dolby NR system
• Dolby B-C type NR and playback equalizer
amplifier 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.
• Car stereo cassette decks
• Playback-only cassette decks
Bipolar silicon monolithic IC
Absolute Maximum Ratings
• Supply voltage
• Operating temperature Topr
• Storage temperature Tstg
• Power dissipation
–40 to +85
–65 to +150
7.8 to 11
∗ This IC is 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 trademarks of Dolby Laboratories Licensing Corporation.
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operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.