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    1.
    发明专利
    未知

    公开(公告)号：DE602004026841D1

    公开(公告)日：2010-06-10

    申请号：DE602004026841

    申请日：2004-05-31

    Applicant: ST MICROELECTRONICS SRL

    Inventor： COPANI TINO ,  SMERZI SANTO ALESSANDRO ,  GIRLANDO GIOVANNI ,  PALMISANO GIUSEPPE

    IPC: H03K23/66

    Abstract: A prescaling stage is described of the type comprising at least one bistable circuit in turn including respective master and slave portions (2, 3) inserted between a first and a second voltage reference (Vcc, GND) and feedback connected to each other. Each portion is provided with at least one differential stage (4, 5) supplied by the first voltage reference (Vcc) and connected, by means of a transistor stage (52, 53), to the second voltage reference (GND), as well as a differential pair (6, 7) of cross-coupled transistors, supplied by output terminals of the differential stage (4, 5) and connected, by means of the transistor stage (52, 53), to the second voltage reference (GND). Advantageously according to the invention, each master and slave portion (2, 3) comprises at least one degeneracy capacity (C2, C3) inserted in correspondence with respective terminals of the transistors of the differential pair (6, 7).

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