Datasheet > MC33215FB

MC33215FB

更新时间： 2024-11-23 11:09:19

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		电信集成电路电话
页数	文件大小	规格书
20页	490K
描述
Telephone Line Interface and Speakerphone Circuit

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数据手册

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MC33215FB 数据手册

Freescale Semiconductor, Inc._{Order this document by MC33215/D}

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

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

Simplified Application

Impedance

DC Offset

Line Current

Telephone

Line

Current

Splitter

1:10

DTMF

Supply

Handset

Microphone

Line

Driver

DC Slope

Base

Microphone

Attenuator

Duplex

Controller

Receive Signal

External Supply

Handset Earpiece

Attenuator

Base Loudspeaker

Auxiliary Input

This device contains 2782 active transistors.

This document contains information on a new product. Specifications and information herein

are subject to change without notice.

Motorola, Inc. 1997

Rev 0

MOTOROLA ANALOG IC DEVICE DATA

For More Information On This Product,

Go to: www.freescale.com

12 3 4 5 6 7...20

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