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MT8840AS PDF预览

MT8840AS

更新时间: 2024-02-06 01:01:19
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

MT8840AS 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP,针数:18
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.9其他特性:FULL DUPLEX
数据速率:2 MbpsJESD-30 代码:R-PDSO-G18
JESD-609代码:e3长度:11.55 mm
湿度敏感等级:1功能数量:1
端子数量:18最高工作温度:85 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):240
认证状态:Not Qualified座面最大高度:2.65 mm
标称供电电压:5 V表面贴装:YES
技术:CMOS电信集成电路类型:MODEM
温度等级:OTHER端子面层:MATTE TIN
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:7.5 mm

MT8840AS 数据手册

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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  
2
ISO -CMOS and switched capacitor  
technologies  
18 Pin DIP  
Applications  
as a telephone ringer. The device is fabricated in  
2
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  
R
O
U
T
I
TX Post-  
Filter  
TX Bandpass  
TxO  
TxDI  
Modulator  
Filter  
RxE  
RxI  
RX Pre-  
Filter  
RX Bandpass  
Filter  
N
G
RxDO  
AGC  
Demodulator  
DET  
CRx  
VDD  
VSS  
VRef  
LOOP  
Figure 1 - Functional Block Diagram  
5-3  

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