U4055B

更新时间： 2024-11-24 21:54:07

品牌	Logo	应用领域
TEMIC		电信电路电话电路光电二极管电子
页数	文件大小	规格书
10页	152K
描述
Low-Voltage Electronic Speech Circuit with Dialer Interface

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U4055B 技术参数

U4055B/U4055B1

Low-Voltage Electronic Speech Circuit with Dialer Interface

Description

The U4055B electronic speech circuit is a linear sidetone equivalent and ear protection rectifiers. A

integrated circuit for use in telephone and other line fed low-cost electrodynamic transducer is used as the

terminal equipment. It replaces the common speech earphone. It contains all components necessary for

circuit with carbon microphone, hybrid transformer, amplification of signals and adaption to the line.

Features

An electronic circuit replaces the microphone hybrid

transformer

DTMF interface with muting

Supply voltage for dialer

Symmetrical input for dynamic or piezo microphone

High range of line feeding current

Input resistance independent of line current and

sidetone suppression circuit.

High performance through the use of dynamic

transducers as the earphone (non-linear distortion

2%)

Built-in ear protection by earphone voltage limiter

Operation possible from 8 mA

Automatic line loss compensation

U4055B1: High level mute; U4055B: Low level mute

Figure 1. Block diagram and pin connection

TELEFUNKEN Semiconductors

1 (10)

Rev. A1, 06-May-96

Preliminary Information

12 3 4 5 6 7...10

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型号	品牌	获取价格	描述	数据表
U4055B1	TEMIC	获取价格	Low-Voltage Electronic Speech Circuit with Dialer Interface
U4056B	ETC	获取价格	Telecommunication IC
U4056B1	TEMIC	获取价格	Telephone Speech Circuit, PDIP16, DIP-16
U4058B	ETC	获取价格	Telecommunication IC
U4058BFP	VISHAY	获取价格	Telecom IC,
U406	CALOGIC	获取价格	Dual N-Channel JFET Switch
U406	Linear Systems	获取价格	LOW NOISE LOW DRIFT MONOLITHIC DUAL N CHANNEL JFET
U406	MICROSS	获取价格	Low Noise, Low Drift, Monolithic Dual N-Channel JFET
U406	INTERSIL	获取价格	N-CHANNEL JFET
U406	NJSEMI	获取价格	Trans JFET N-CH 4-Pin TO-71