MC33215A: ARCHIVED - Telephone Line Interface and Speakerphone Ciruit ARCHIVED

Overview

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 desinged to operate at low line currents down to 4.0 mA enabling parallel operation with a classical telephone set.

MC33215 removed from active portfolio. Possible Replacement Part: None

Archived content is no longer updated and is made available for historical reference only.

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Features

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 Seperately
Smooth-Switch-Over from Handset to Speakerphone Operation
Adjustable Switching Depth for Handsfree Operation

MoreLess

Features

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 Seperately
Smooth-Switch-Over from Handset to Speakerphone Operation
Adjustable Switching Depth for Handsfree Operation