Datasheet > AS2540Q

AS2540Q

更新时间： 2024-11-06 22:50:11

品牌	Logo	应用领域
艾迈斯 - AMSCO		远程控制电话
页数	文件大小	规格书
18页	250K
描述
Remote Controlled Single-Chip-Telephone

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中文翻译

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技术参数
数据手册

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AS2540Q 技术参数

生命周期：	Contact Manufacturer	零件包装代码：	DIE
包装说明：	DIE,	Reach Compliance Code：	unknown
HTS代码：	8542.39.00.01	风险等级：	5.55
JESD-30 代码：	X-XUUC-N	功能数量：	1
最高工作温度：	60 °C	最低工作温度：	-15 °C
封装主体材料：	UNSPECIFIED	封装代码：	DIE
封装形状：	UNSPECIFIED	封装形式：	UNCASED CHIP
认证状态：	Not Qualified	表面贴装：	YES
技术：	CMOS	电信集成电路类型：	TELEPHONE MULTIFUNCTION CIRCUIT
温度等级：	COMMERCIAL	端子形式：	NO LEAD
端子位置：	UPPER	Base Number Matches：	1

AS2540Q 数据手册

Data Sheet AS2540

austriamicrosystems

Remote Controlled Single-Chip-Telephone

DATA SHEET (PRELIMINARY)

AS2540

General Description

Key Features

The AS2540 is a CMOS integrated circuit that

incorporates a speech circuit (line-adaptation, 2/4-wire

conversion, separate Rx- and Tx-amplifiers for handset

and modem), MF dialler, ring frequency detector, ring

melody generator and a two wire serial interface. It

shall act as an a/b-line-powered device in order to

interface a main-powered CPU to the analogue

telephone line.

Line Interface, Speech Circuit, MF Dialler and Tone Ringer

on a 28 pin CMOS chip

Programmable via 2-wire serial interface

(UART 9600 baud, 8N1)

Watch dog timer for Backup Mode

Additional input for modem transmit path

Additional output for modem receive path

CMOS for high EMC immunity

Low Noise (max. –72 dBm)

AS2540 can operate in a so-called mainpower mode

and in a backup mode. During mainpower mode, a

watchdog timer is running on AS2540, which has to be

reset via the serial interface, which is connected to the

CPU through opto-couplers. During backup mode (=

The main-power failure or SW engine problem),

AS2540 can operate as an independent basic MF

dialler (digits 0-9*#)

Operating range from 15mA to 100mA (down to 5mA with

reduced performance)

Soft clipping for handset operation to avoid harsh distortion

Line loss compensation selectable by pin option

Real and complex impedance selectable by external

components

Side tone adaption selectable by external components

Ring frequency discrimination

3-tone ring melody generator

Applications

Package

Web Telephones

Answering Machines

28 pin SOIC

Dice-on-Foil

Fax Machines

Base Station of Cordless Telephones

Hospital Communication Units

Block Diagram

Main Power Mode

Backup Mode

Line

+ 6dB

ROH

ROT

RO H

ROT

-2dB

2dB

STB

Mask

TIT

DPn

AGND

DTMF-

generator

RxD

TxD

RxD

TxD

DIALLER

UART

DIALLER

UART

MODE

VDD

RFD

VSS

OSC

EHS

MHS

Revision 3.1

Page 1 of 18

12 3 4 5 6 7...18

中文翻译

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与AS2540Q相关器件

型号	品牌	获取价格	描述	数据表
AS2540T	AMSCO	获取价格	Remote Controlled Single-Chip-Telephone
AS255	ETC	获取价格	Voltage Reference
AS25-5	ASTRODYNE	获取价格	25W Single Output Switching Power Supply
AS255A	ETC	获取价格	Voltage Reference
AS255AM	CALOGIC	获取价格	Two Terminal Voltage Reference, 1 Output, 2.5V, PDSO3, SOT-23, SMT-3
AS255AMT1	CALOGIC	获取价格	Two Terminal Voltage Reference, 1 Output, 2.5V, PDSO3, SOT-23, SMT-3
AS255AMT2	CALOGIC	获取价格	Two Terminal Voltage Reference, 1 Output, 2.5V, PDSO3, SOT-23, SMT-3
AS255B	ETC	获取价格	Voltage Reference
AS255BM	CALOGIC	获取价格	Two Terminal Voltage Reference, 1 Output, 2.5V, PDSO3, SOT-23, SMT-3
AS255BMT1	CALOGIC	获取价格	Two Terminal Voltage Reference, 1 Output, 2.5V, PDSO3, SOT-23, SMT-3

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