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XR-T6421 - Speakerphone Control IC

Description

The XR-T6421 is a monolithic integrated circuit for use in high performance speakerphone systems.

It is designed to provide all control functions for the XR-T6420-1 or XR-T 6420-2 speakerphone audio circuit.

Features

  • Low Current Background Noise Detection and Suppression External Control of Attach and Decay Time Constants Independent Control of Gain and Frequency Response Provides Three Level Control of Transmit & Receive Paths.

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Datasheet preview – XR-T6421

Datasheet Details

Part number XR-T6421
Manufacturer Exar
File Size 137.50 KB
Description Speakerphone Control IC
Datasheet download datasheet XR-T6421 Datasheet
Additional preview pages of the XR-T6421 datasheet.

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Full PDF Text Transcription

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XR-T6421 Speakerphone Control IC GENERAL DESCRIPTION The XR-T6421 is a monolithic integrated circuit for use in high performance speakerphone systems. It is designed to provide all control functions for the XR-T6420-1 or XR-T 6420-2 speakerphone audio circuit. The XR-T6421 contains the level sensors and logic necessary to change the attenuation in 'the transmitting or receiving path in order to avoid acoustic feedback. Circuitry is included to detect bacground noise level and provide a preset amount of attenuation in each path when no voice is present.
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