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U3900BM

Atmel
Part Number U3900BM
Manufacturer Atmel
Description Programmable Telephone Audio Processor
Published Mar 13, 2006
Detailed Description U3900BM Programmable Telephone Audio Processor Description The programmable telephone audio processor U3900BM is a linea...
Datasheet PDF File U3900BM PDF File

U3900BM
U3900BM

Overview
U3900BM Programmable Telephone Audio Processor Description The programmable telephone audio processor U3900BM is a linear integrated circuit for use in feature phones, answering machines, fax machines and cordless phones.
It contains the speech circuit, tone-ringer interface with DC/DC converter, sidetone equivalent and ear-protection rectifiers.
The circuit is line-powered and contains all components necessary for signal amplification and adaptation to the line.
The U3900BM can also be supplied via an external power supply.
An integrated voice switch with loudspeaker amplifier enables hands-free or loudhearing operation.
With an anti-feedback function, acoustical feedback during loudhearing...


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