Datasheet4U Logo Datasheet4U.com

U4091BM - Programmable Telephone Audio Processor

General Description

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-protection rectifiers.

Key Features

  • 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, unregulated) and a special supply for electret microphone D Voice switch D Interface for answering machine and cordless phone Benefits D No piezoelectric transducer for tone ringing necessary D Complete system integration of analog signal processing on one chip D Very few external components.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
U4091BM-N Programmable Telephone Audio Processor ATMEL
U401 Dual N-Channel JFET Switch Calogic LLC
U401 N-Channel JFETs Siliconix
U402 Dual N-Channel JFET Switch Calogic LLC
U402 N-Channel JFETs Siliconix

Other Datasheets by TEMIC Semiconductors (now Microchip)

Part Number Description
U4091B Programmable Telephone Audio Processor
U4090B Monolithic Integrated Feature Phone Circuit
U4092B Monolithic Integrated Feature Phone Circuit
U4030B Telephone Speech Circuit
U4050B Speech Circuit

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
www.DataSheet4U.com U4091BM Programmable Telephone Audio Processor Description 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-protection rectifiers. The circuit is line-powered and contains all components necessary for signal amplification and adaptation to the line. The U4091BM 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 can be reduced significantly.