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MC33215 PDF预览

MC33215

更新时间: 2024-11-23 00:01:07
品牌 Logo 应用领域
摩托罗拉 - MOTOROLA 电话
页数 文件大小 规格书
21页 294K
描述
Telephone Line Interface and Speakerphone Circuit

MC33215 数据手册

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Order this document by MC33215/D  
52  
1
FB SUFFIX  
PLASTIC PACKAGE  
CASE 848B  
The MC33215 is developed for use in fully electronic telephone sets with  
speakerphone functions. The circuit performs the ac and dc line termination,  
2–4 wire conversion, line length AGC and DTMF transmission. The  
speakerphone part includes a half duplex controller with signal and noise  
monitoring, base microphone and loudspeaker amplifiers and an efficient  
supply. The circuit is designed to operate at low line currents down to 4.0 mA  
enabling parallel operation with a classical telephone set.  
(TQFP–52)  
Highly Integrated Cost Effective Solution  
Straightforward AC and DC Parameter Adjustments  
Efficient Supply for Loudspeaker Amplifier and Peripherals  
Stabilized Supply Point for Handset Microphone  
Stabilized Supply Point for Base Microphone  
Loudspeaker Amplifier can be Powered and Used Separately  
Smooth Switch–Over from Handset to Speakerphone Operation  
Adjustable Switching Depth for Handsfree Operation  
42  
1
B SUFFIX  
PLASTIC PACKAGE  
CASE 858  
(SDIP–42)  
ORDERING INFORMATION  
Operating  
Temperature Range  
Device  
Package  
MC33215FB  
MC33215B  
TQFP–52  
SDIP–42  
T = –20° to +70°C  
A
Simplified Application  
AC  
Impedance  
DC Offset  
Line Current  
Telephone  
Line  
Current  
Splitter  
1:10  
DTMF  
MF  
HM  
BM  
V
Supply  
CC  
Handset  
Microphone  
Line  
Driver  
DC Slope  
Base  
Microphone  
Attenuator  
Duplex  
Controller  
Receive Signal  
V
or  
CC  
External Supply  
R
x
Handset Earpiece  
Attenuator  
LS  
Base Loudspeaker  
Auxiliary Input  
This device contains 2782 active transistors.  
This document contains information on a new product. Specifications and information herein  
Motorola, Inc. 1997  
Rev 0  
are subject to change without notice.  

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