MC34118 Datasheet - ART CHIP

MC34118 VOICE SWITCHED SPEAKERPHONE

MC34118 Specifications and Applications Information VOICE SWITCHED SPEAKERPHONE CIRCUIT The MC34118 Voice Switched Speakerphone Circuit incorporates the necessary amplifiers, attenuators, level detectors, and control algorithm to form the heart of a high quality hands-free speakerphone system. Included are a microphone amplifier with adjustable gain and MUTE control, transmit and Receive attenuators which operate in a complementary manner, level detectors at both input and output of both atten.

MC34118 Features

* of a featurephone. z Improved Attenuator Gain Range:52dB Between Transmit and Receive z Low Voltage Operation for Line-Powered Applications (3.0-6.5V) z 4-Point signal Sensing for improved Sensitivity z Background Noise Monitors for Both Transmit and Receive Paths z Microphone Amplifier Gain Set by

MC34118-ARTCHIP.pdf