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    • 1. 发明申请
    • OFFSET ADJUSTMENT OF CMOS MATCHED PAIRS WITH BODY VOLTAGE
    • 具有体电压的CMOS匹配对的偏移调整
    • WO99007067A1
    • 1999-02-11
    • PCT/US1998/015674
    • 1998-07-27
    • H03F3/45
    • H03F3/45766H03F2203/45342
    • The present invention includes a method for reducing an offset voltage for transistors (220, 230). The method independently biases a substrate of one of the transistors (220) so that the threshold voltages of the transistors change. This change causes the gate-to-source voltage to change, which can be used to reduce the offset voltage. The biasing includes providing an adjustable bias voltage, such as provided by a digital-to-analog converter (270). The method further includes biasing a substrate of the other transistor (230). The offset voltage is measured at the gates of the transistors (220, 230). Once determined, the adjustable voltage is adjusted to maximally reduce the offset voltage.
    • 本发明包括用于减小晶体管(220,230)的偏移电压的方法。 该方法独立地偏置晶体管(220)之一的衬底,使得晶体管的阈值电压发生变化。 这种变化导致栅极 - 源极电压发生变化,这可以用于减小偏移电压。 偏置包括提供诸如由数模转换器(270)提供的可调偏置电压。 该方法还包括偏置另一晶体管(230)的衬底。 在晶体管(220,230)的栅极处测量偏移电压。 一旦确定,可调节的电压被调整以最大程度地减少偏移电压。