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MC34018-S28-T Datasheet

Part NameMC34018-S28-T UTC
Unisonic Technologies UTC
MC34018 image

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.

* 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.
* Power audio amplifier for typical 100mW output (into 25Ω) with peak limiting for speaker to minimize distortion.
* Volume control function for external volume control circuit.

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