U4091BM-N - ATMEL

U4091BM-N Programmable Telephone Audio Processor

The programmable telephone audio processor U4091BM-N 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 amplific.

Features

•
•
•
• Speech Circuit with Anti-clipping Tone-ringer Interface with DC/DC Converter Speaker Amplifier with Anti-distortion Power-supply Management (Regulated, Unregulated) and a Special Supply for Electret Microphone
• Voice Switch
• Interface for Answering Machine and Cordless Phone Applications
•
•
•
•
• Feature Phone Answering Machine Fax Machine Speaker Phone Cordless Phone Programmable Telephone Audio Processor U4091BM-N Benefits
• No Piezoelectric Transducer for Tone Ringing Necessary
• Complete System Integration of Analog Signal Processing on One Chip
• Very Few External Components.