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MC33215

Motorola
Part Number MC33215
Manufacturer Motorola
Description Telephone Line Interface and Speakerphone Circuit
Published Dec 28, 2005
Detailed Description Order this document by MC33215/D MC33215 Advance Information Telephone Line Interface and Speakerphone Circuit The MC3...
Datasheet PDF File MC33215 PDF File

MC33215
MC33215

Overview
Order this document by MC33215/D MC33215 Advance Information Telephone Line Interface and Speakerphone Circuit 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.
52 1 FB SUFFIX PLASTIC PACKAGE CASE 848B (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 ORDERING INFORMATION Device MC33215FB MC33215B Operating Temperature Range TA = –20° to +70°C Package TQFP–52 SDIP–42 42 1 B SUFFIX PLASTIC PACKAGE CASE 858 (SDIP–42) Simplified Application AC Impedance DC Offset Line Current Telephone Line DTMF Handset Microphone Base Microphone MF HM Attenuator Duplex Controller Rx Line Driver Current Splitter 1:10 VCC Supply BM DC Slope Receive Signal VCC or External Supply Base Loudspeaker LS Attenuator Handset Earpiece 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 1 MC33215 FEATURES Line Driver and Supply • AC and DC Termination of Telephone Line • Adjustable Set Impedance for Real and Complex Termination • Efficient Supply Point for Loudspeak...


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