Datasheet > MT8840AE

MT8840AE

更新时间： 2024-09-29 22:38:35

品牌	Logo	应用领域
MITEL		调制解调器
页数	文件大小	规格书
8页	60K
描述
ISO2-CMOS Data Over Voice Modem

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中文翻译

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数据手册

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MT8840AE 数据手册

ISO²-CMOS

MT8840

Data Over Voice Modem

ISSUE 4

November 1990

Features

Ordering Information

•

Performs ASK (amplitude shift keyed)

modulation and demodulation

MT8840AE

MT8840AS

18 Pin Plastic DIP

18 Pin SOIC

•

32 kHz carrier frequency

0°C to +85°C

Up to 2 kbit/s full duplex data transfer rate

On-chip oscillator

Description

On-chip tone caller for alerting functions

Adjustable tone caller frequencies

Selectable self-loop test mode

5V/2.5mA power supply

The MT8840 is a carrier over voice modem which

allows simultaneous transfer of voice and data over

a single pair of wires. Data is transferred on an

amplitude shift keyed (ASK) 32 kHz carrier. On-chip

filters remove voice frequency signals from the

received composite voice and data signal prior to

demodulation. The modulating signal is a bit stream

with a typical data rate of 2 kbit/s. In addition, the

device contains a two tone warbler which functions

ISO -CMOS and switched capacitor

technologies

•

18 Pin DIP

Applications

as a telephone ringer. The device is fabricated in

MITEL’s

double-poly

ISO -CMOS

technology

utilizing switched-capacitor techniques.

•

Simultaneous data and voice communication in

PABXs

•

2 kbit/s data modem

"Smart" telephone sets

ETC

MTC FATC

OSC1

OSC2

CK32

Timing

and

Control

Tone

Caller

TCO

TX Post-

Filter

TX Bandpass

TxO

TxDI

Modulator

Filter

RxE

RxI

RX Pre-

Filter

RX Bandpass

Filter

RxDO

AGC

Demodulator

DET

CRx

V_DD

V_SS

V_Ref

LOOP

Figure 1 - Functional Block Diagram

5-3

12 3 4 5 6 7 8

中文翻译

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与MT8840AE相关器件

型号	品牌	获取价格	描述	数据表
MT8840AS	MITEL	获取价格	ISO2-CMOS Data Over Voice Modem
MT8841	MITEL	获取价格	CMOS Calling Number Identification Circuit
MT8841AE	MITEL	获取价格	CMOS Calling Number Identification Circuit
MT8841AE	MICROSEMI	获取价格	Telephone Calling No Identification Circuit, CMOS, PDIP16,
MT8841AN	MITEL	获取价格	CMOS Calling Number Identification Circuit
MT8841AN	MICROSEMI	获取价格	Telephone Calling No Identification Circuit, CMOS, PDSO20,
MT8841AS	MITEL	获取价格	CMOS Calling Number Identification Circuit
MT8841ASR	ZARLINK	获取价格	Telephone Calling No Identification Circuit, CMOS, PDSO16, SOIC-16
MT8843	MITEL	获取价格	CMOS Calling Number Identification Circuit 2 Preliminary Information
MT8843AE	MITEL	获取价格	CMOS Calling Number Identification Circuit 2 Preliminary Information