programmable telephone audio processor.
D Speech circuit with anti-clipping D Tone-ringer interface with DC/DC converter D Speaker amplifier with anti-distortion D Power-supply management (regulated, unregulate.
Feature phone, answering machine, fax machine, speaker phone, cordless phone
Block Diagram
Speech circuit
Voice switc.
The programmable telephone audio processor U4091BM is a linear integrated circuit for use in feature phones, answering machines and fax machines. It contains the speech circuit, tone-ringer interface with DC/DC converter, sidetone equivalent and ear-.
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