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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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Other Datasheets by Exar (now MaxLinear)

Part Number Description
XR-T6420-1 Speakerphone Audio Circuit
XR-T6420-2 Speakerphone Audio Circuit
XR-T6425 Speakerphone IC
XR-T6165 Codirectional Digital Data Processor
XR-T3590 Single Chip V.35 Transceiver

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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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