CDB6422 Enhanced Full-Duplex Speakerphone IC Datasheet

Features: www.DataSheet4U.com CS6422 CS6422 Enhan ced Enhanced Full-Duplex Full-duplex Sp eakerphone Speakerphone IC IC Features l Single-chip, General Description Mos t modern speakerphones use half-duplex operation, which alternates transmissio n between the far-end talker and the sp eakerphone user. This is done to ensure stability because the acoustic couplin g between the speaker and microphone is much higher in speakerphones than in h andsets where the coupling is mechanica lly suppressed. The CS6422 enables full -duplex conversation using echo cancell ation and suppression in a single-chip solution. The CS6422 can easily replace existing half-duplex speakerphone ICs with a huge increase in conversation qu ality. The CS6422 consists of telephone & audio interfaces, two codecs and an echo-cancelling DSP. ORDERING INFORMATI ON See page 48. CS6422-IS -40o to 85oC 20-pin SOIC CDB6422 Evaluation Board f ull-duplex, hands-free operation l Opti onal Tx Noise Guard l Programmable attenuation during double-ta.

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