35/40

TDA7500A

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Distortion Limiting

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Premium Equalization

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Soft mute

TAPE Signal Processsing

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Dolby B Noise Reduction

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Automatic Music Search

CD Signal Proceessing

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Dynamic Range Compression

Audiophile

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Parametric Equalization

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Crossover

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Channel Delays

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Center Channel Imaging Output

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Audio Noise Reduction

Other

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Voice compression/decompression for TIM storage

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Echo and noise cancelling for mobile phone connection

Application Scheme

The TDA7500A can operate as a standalone device either it can interface the TDA7501 which contains

the analog input multiplexer, analog volume control and the line-driver. The FM_MPX and FM_LEVEL sig-

nals coming from the tuner and other signals supplied by analog sources are adapted by the TDA7501

and fed to the TDA7500A. A block diagram of the system is shown in Fig. 20 below.

The TDA7500A converts all the analog signals into digital domain and performs AM/FM processing and

audio/sound processing. Thanks to this, it is possible to process any audio source as well analog as digital

in parallel, to record FM mono for traffic information, telephone response, navigation and RDS. Finally the

digital signals are D/A converted and sent to the TDA7501 for the final level adjustment and for the analog

volume control.