TP5700AM

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TP5700AM 技术参数

December 1989

TP5700A

Telephone Speech Circuit

General Description

Features

5 mA–120 mA loop operation

The TP5700A is a linear bipolar device which includes all

the functions required to build the speech circuit of a tele-

phone. It replaces the hybrid transformer, compensation cir-

cuit and sidetone network used in traditional designs. When

used with an electret microphone (with integral FET buffer)

and dynamic receiver, superior audio linearity, distortion and

noise performance are obtained. Loop attenuation compen-

sation is also included.

Voltage swing down to 1.0V

Electret microphone amplifier

Receive amplifier with push-pull outputs

Automatic gain compensation for loop length

Sidetone impedance independent of input impedance

DTMF interface with muting

Voltage regulator outputs for DTMF generator etc.

Works in parallel with a standard phone on 20 mA loop

Available in small outline surface mount package

The low voltage design enables the circuit to work over a

wide range of operating conditions, including long loops, ex-

tension telephones and subscriber carrier applications.

Operating power is derived from the telephone line.

Simplified Block Diagram

TL/H/5201–1

1995 National Semiconductor Corporation

TL/H/5201

RRD-B30M115/Printed in U. S. A.

12 3 4 5 6 7 8

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型号	品牌	获取价格	描述	数据表
TP5700AN	NSC	获取价格	Telephone Speech Circuit
TP5700AN/A+	ETC	获取价格	Telephone Speech Circuit
TP5700AN/B+	ETC	获取价格	Telephone Speech Circuit
TP5700AWM	NSC	获取价格	IC,TELEPHONE SPEECH CIRCUIT,BIPOLAR,SOP,16PIN,PLASTIC
TP5700N	ETC	获取价格	Telephone Speech Circuit
TP5700N/A+	ETC	获取价格	Telephone Speech Circuit
TP5700N/B+	ETC	获取价格	Telephone Speech Circuit
TP5700N1	NSC	获取价格	IC,TELEPHONE SPEECH CIRCUIT,BIPOLAR,DIP,16PIN,PLASTIC
TP5700N-1/A+	ETC	获取价格	Telephone Speech Circuit
TP5700N-1/B+	ETC	获取价格	Telephone Speech Circuit