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    • 28. 发明授权
    • Folding circuit
    • 折叠电路
    • US5376937A
    • 1994-12-27
    • US20477
    • 1993-02-22
    • William T. ColleranAsad A. Abidi
    • William T. ColleranAsad A. Abidi
    • H03M1/06H03M1/36
    • H03M1/0682H03M1/141
    • A folding circuit includes a differential resistance ladder and a plurality of comparators coupled to the differential resistance ladder in a manner which substantially reduces capacitive loading on the differential ladder. In addition, the folding circuit has a minimum number of output resistors to facilitate resistor matching for precision outputs. In another aspect of the invention, the folding circuit has a replica gain matching circuit which includes a replica comparator of predetermined size, which is coupled to a replica differential ladder at a predetermined location so as to replicate the currents drawn by the comparators coupled to the main differential resistance ladder for precise gain matching.
    • 折叠电路包括差分电阻梯和多个比较器,其以大大降低差分梯的容性负载的方式耦合到差分电阻梯。 此外,折叠电路具有最小数量的输出电阻,以便于精确输出的电阻匹配。 在本发明的另一方面,折叠电路具有复制增益匹配电路,其包括预定尺寸的复制比较器,其在预定位置处耦合到复制子梯,以便复制由耦合到 主差分电阻梯,用于精确增益匹配。