BIPOLAR LSI CODEC FOR PCM EQUIPMENT.

T. Moriya, T. Matsumura, H. Iwamoto, T. Tsuda, Y. Ichimiya, H. Gambe

    研究成果: Article査読

    抄録

    A 1-chip LSI CODEC that can operate at speeds from single- to multi-channel on a time-shared basis was fabricated using the MOS bipolar process. The CODEC, which includes two sample and hold circuits, uses one common companding DA converter for tranceiving and its companding law can be switched between A-law and mu -law with an external control pin. Coupled with its analog compatible enhanced speed I**2L for successive approximation logics, the CODEC achieves ample speed for a multichannel time-shared operation up to 8 channels as an encoder only, 16 channels as a decoder only and 4 channels for bidirectional operation. Measured results show that S/N//Q and gain tracking characteristic curves are well within the limits specified in CCITT Recommendation G712.

    本文言語English
    ジャーナルConference Record - International Conference on Communications
    1
    出版ステータスPublished - 1980

    ASJC Scopus subject areas

    • Media Technology

    フィンガープリント 「BIPOLAR LSI CODEC FOR PCM EQUIPMENT.」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル