U4091BM-N 반도체 회로 부품 판매점
Programmable Telephone Audio Processor
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 ATMEL Corporation |
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
Benefits
• No Piezoelectric Transducer for Tone Ringing Necessary
• Complete System Integration of Analog Signal Processing on One Chip
• Very Few External Components
U4091BM-N
Description
The programmable telephone audio processor U4091BM-N is a linear integrated cir-
cuit 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 nec-
essary for signal amplification and adaptation to the line. The U4091BM-N 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,
acoustic feedback during loudhearing can be reduced significantly. The generated
supply voltage is suitable for a wide range of peripheral circuits.
Rev. 4666B–CORD–08/04
http://www.Datasheet4U.com
Figure 1. Block Diagram
Speech
circuit
DTMF
Voice
switch
Serial
bus
Audio
amplifier
Tone
ringer
Clock
Data
Reset
MCU
2 U4091BM-N
4666B–CORD–08/04
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제조업체: ATMEL Corporation
( atmel )
U4091BM-N data
데이터시트 다운로드 :
[ U4091BM-N.PDF ]
[ U4091BM-N 다른 제조사 검색 ]
국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
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