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MC34018 - VOICE SWITCHED SPEAKER-PHONE CIRCUIT

General Description

The UTC MC34018 speaker-phone integrated circuit includes all the active circuitry and control functions to implement a high quality hands-free telephone system.

Key Features

  • S.
  • Chip Select pin for Power conservation (active/standby mode).
  • Integrated all necessary active circuitry for a hand-free telephone into one single chip.
  • Operating under wide dynamic range through signal compression technology.
  • Build-In voltage regulators illuminate external regulators for lining operation.
  • Monitoring system for background noise level.
  • Background sound level compensation for transmit and receive levels as well as the background level.
  • P.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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UNISONIC TECHNOLOGIES CO., LTD MC34018 LINEAR INTEGRATED CIRCUIT VOICE SWITCHED SPEAKER-PHONE CIRCUIT  DESCRIPTION The UTC MC34018 speaker-phone integrated circuit includes all the active circuitry and control functions to implement a high quality hands-free telephone system. The circuit includes a microphone amplifier, a speaker amplifier, level detectors, a background sound level monitoring system in both the transmit and receive channels and an attenuation system which can control the transmit and receive levels as well as the background level. The applications include household and office speaker-phones, intercom systems, hand free kit for mobile phones, and others.  FEATURES * Chip Select pin for Power conservation (active/standby mode).