公开(公告)号：US20020125917A1

公开(公告)日：2002-09-12

申请号：US10143417

申请日：2002-05-10

Applicant: STMicroelectronics Limited

Inventor： William Barnes

IPC: H03F003/45

CPC classification number: H03K5/249 ,  H03K3/356139 ,  H03K5/2481

Abstract: A comparator circuit with comparing means for comparing first and second voltages, has current source circuitry for providing current to said comparing means, said current source circuitry having an input for receiving a clock signal having first and second states, whereby the comparing means starts to compare the first and second voltages when the clock signal makes a transition from the first state to the second state; and means for determining when said comparing means has completed a comparison of said first and second voltages and for switching off said current source circuitry and hence said comparing means when said comparison has been completed.

Abstract translation: 具有用于比较第一和第二电压的比较装置的比较器电路具有用于向所述比较装置提供电流的电流源电路，所述电流源电路具有用于接收具有第一和第二状态的时钟信号的输入，由此比较装置开始比较 当时钟信号从第一状态转变到第二状态时的第一和第二电压; 以及用于确定何时所述比较装置已经完成了所述第一和第二电压的比较并且用于当所述比较完成时关闭所述电流源电路以及因此所述比较装置的装置。