TECHNICAL DATA LINEAR INTEGRATED CIRCUIT VOICE SWITCHED SPEAKER PHONE CIRCUIT DESCRIPTION The IL34018 speaker-phone integrated circuit incorporates the necessary functions to produce a high quality hands-free speaker-phone system.
The applications include household and office speaker-phones, intercom systems, hand free kit for mobile phones, and others IL34018 FEATURES • All necessary level detection and attenuation controls for a hand-free telephone included.
• Background noise level monitoring with long time constant.
• Background sound level compensation for transmit and receive levels as well as the background level.
• Wide operating dynamic range through signal compression.
• On-chip...

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