U4084B

更新时间： 2024-11-27 21:55:35

品牌	Logo	应用领域
TEMIC		电信集成电路电信电路电话电路光电二极管
页数	文件大小	规格书
26页	544K
描述
Low-Voltage, Voice-Switched Circuit for Hands-Free Operation

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U4084B 技术参数

U4084B

Low-Voltage, Voice-Switched Circuit for Hands-Free Operation

Description

The low-voltage, voice-switched speakerphone circuit disable, dial tone detector and mute function etc.

U4084B incorporates the features listed below. The ver- Due to low-voltage operation, it can be operated either by

satility of the device is further enhanced by giving access low supply voltage or via a telephone line requiring

to internal circuit points.

4.0 mA typ. Further features are stand-alone operation

The block diagram shows amplifiers, level detectors, via a coupling transformer (Tip and Ring) or in

transmit and receive attenuators operating in comple- conjunction with a handset speech network, as shown in

mentary functions, back ground noise monitors, chip figure 2.

Features

Benefits

Low-voltage operation: 3.0 to 6.5 V

Fast channel switching enables quasi duplex

Attenuator gain range between

transmit and receive: 52 dB

operation

Low current consumption for high output volume

Optimized U3800BM interface

Four-point signal sensing for improved sensitivity

Monitoring system for background-noise level

Microphone-amplifier gain adjustable

Mute function

Chip disable for active/ standby operation

Dial tone detector

Compatible with the speaker amplifier U4083B

Case: DIP24 or SO24

TELEFUNKEN Semiconductors

1 (26)

Rev. A1, 31-Jan-97

Preliminary Information

12 3 4 5 6 7...26

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型号	品牌	获取价格	描述	数据表
U4084B-FL	ETC	获取价格	Speakerphone Circuit
U4085B	ETC	获取价格	Technische Daten Technical Data
U4087B	TEMIC	获取价格	Low Voltage Voice Switch Interface Circuit for Hands-free Operation in Telephone
U4087B-FP	TEMIC	获取价格	Low Voltage Voice Switch Interface Circuit for Hands-free Operation in Telephone
U4089B	ATMEL	获取价格	MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
U4089B-M	ATMEL	获取价格	MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
U4089B-MFN	ATMEL	获取价格	MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
U4089B-MFNG3	ATMEL	获取价格	MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
U4089B-MSD	ETC	获取价格	Speakerphone Circuit
U4089B-P	ATMEL	获取价格	Monolithic Integrated Feature Phone Circuit