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XR-T6421 Datasheet Speakerphone Control IC

Manufacturer: Exar (now MaxLinear)

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.

Overview

XR-T6421 Speakerphone Control IC GENERAL.

Key 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.