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BL34018

Part Number	BL34018
Manufacturer	SHANGHAI BELLING
Description	high quality hands free speakerphone system
Published	Dec 19, 2006
Detailed Description	www.DataSheet4U.com BL34018 1. GENERAL DESCRIPTION The BL34018 Speakerphone integrated circuit Incorporates the necessa...
Datasheet	BL34018 PDF File

Overview

www.
DataSheet4U.
com BL34018 1.
GENERAL DESCRIPTION The BL34018 Speakerphone integrated circuit Incorporates the necessary amplifiers ， attenuators ， and control functions to produce a high quality hands free speakerphone system． Include are a microphone amplifier， a power audio amplifier for the speaker， transmit and receive attenuators，a monitoring system for background sound level，and an attenuation control system which responds to the relative transmit and receive levels as well as the background level．Also included are all necessary regulated voltages for both internal and external circuitry， allowing line-powered operation (no additional power supplies required)．A chip select pin allow...

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