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MC33219A

Motorola
Part Number MC33219A
Manufacturer Motorola
Description VOICE SWITCHED SPEAKERPHONE CIRCUIT
Published Dec 28, 2005
Detailed Description Order this document by MC33219A/D MC33219A Voice Switched Speakerphone The Motorola MC33219A Voice Switched Speakerphon...
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MC33219A
MC33219A

Overview
Order this document by MC33219A/D MC33219A Voice Switched Speakerphone The Motorola MC33219A Voice Switched Speakerphone Circuit incorporates the necessary amplifiers, attenuators, level detectors, and control algorithm to form the heart of a high quality hands–free speakerphone system.
Included are a microphone amplifier with mute, transmit and receive attenuators, a background monitoring system for both the transmit and receive paths, and level detectors for each path.
An AGC system reduces the receive gain on long lines where loop current and power are in short supply.
A dial tone detector prevents fading of dial tone.
A Chip Disable pin permits conserving power when the circuit is not i...


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