DIFFERENTIAL AMPLIFIER WITH ACCURATE INPUT OFFSET VOLTAGE
    2.
    发明申请
    DIFFERENTIAL AMPLIFIER WITH ACCURATE INPUT OFFSET VOLTAGE 有权
    具有精确输入偏置电压的差分放大器

    公开(公告)号:US20090189694A1

    公开(公告)日:2009-07-30

    申请号:US12021477

    申请日:2008-01-29

    IPC分类号: H03F3/45

    摘要: An amplifier with accurate input offset voltage is described. In one design, the amplifier includes first and second unbalanced differential pairs. The first unbalanced differential pair receives a differential input signal and provides a first differential current signal. The second unbalanced differential pair receives a differential reference signal and provides a second differential current signal, which is subtracted from the first differential current signal to obtain a differential output signal. The second differential current signal tracks an error current in the first differential current signal so that the differential output signal is zero when the differential input signal is equal to a target input offset voltage for the amplifier. For each unbalanced differential pair, one transistor is M times the size of the other transistor, with M being selected to obtain the target input offset voltage.

    摘要翻译: 描述了具有精确输入失调电压的放大器。 在一种设计中,放大器包括第一和第二不平衡差分对。 第一不平衡差分对接收差分输入信号并提供第一差分电流信号。 第二不平衡差分对接收差分参考信号,并提供从第一差分电流信号中减去的第二差分电流信号,以获得差分输出信号。 第二差分电流信号跟踪第一差分电流信号中的误差电流,使得当差分输入信号等于放大器的目标输入偏移电压时,差分输出信号为零。 对于每个不平衡差分对,一个晶体管是另一个晶体管尺寸的M倍,其中M被选择以获得目标输入偏移电压。

    FIXED SNOW MEASURING PLATE
    4.
    发明申请
    FIXED SNOW MEASURING PLATE 有权
    固定雪测量板

    公开(公告)号:US20140208844A1

    公开(公告)日:2014-07-31

    申请号:US14240468

    申请日:2012-07-03

    IPC分类号: G01W1/14

    CPC分类号: G01W1/14

    摘要: There is provided a fixed snow measuring plate, the snow measuring plate that is fixed to the ground and is provided on the land to be disposed in a lower part of one end of an instrument tower in which a sensor for observing drifted snow is installed, wherein the snow measuring plate is installed such that a position thereof is fixed to the ground.

    摘要翻译: 设置有固定在雪地上的固定积雪测量板,该测土板设置在设置在用于观测漂雪的传感器的乐器塔的一端的下部的陆地上, 其中,所述雪测量板被安装成使得其位置固定在地面上。

    Fixed snow measuring plate
    6.
    发明授权
    Fixed snow measuring plate 有权
    固定积雪测量板

    公开(公告)号:US09575211B2

    公开(公告)日:2017-02-21

    申请号:US14240468

    申请日:2012-07-03

    IPC分类号: G01W1/14

    CPC分类号: G01W1/14

    摘要: There is provided a fixed snow measuring plate, the snow measuring plate that is fixed to the ground and is provided on the land to be disposed in a lower part of one end of an instrument tower in which a sensor for observing drifted snow is installed, wherein the snow measuring plate is installed such that a position thereof is fixed to the ground.

    摘要翻译: 设置有固定在雪地上的固定积雪测量板,该测土板设置在设置在用于观测漂雪的传感器的乐器塔的一端的下部的陆地上, 其中,所述雪测量板被安装成使得其位置固定在地面上。

    Differential amplifier with accurate input offset voltage
    8.
    发明授权
    Differential amplifier with accurate input offset voltage 有权
    具有精确输入失调电压的差分放大器

    公开(公告)号:US07843264B2

    公开(公告)日:2010-11-30

    申请号:US12021477

    申请日:2008-01-29

    IPC分类号: H03F3/45

    摘要: An amplifier with accurate input offset voltage is described. In one design, the amplifier includes first and second unbalanced differential pairs. The first unbalanced differential pair receives a differential input signal and provides a first differential current signal. The second unbalanced differential pair receives a differential reference signal and provides a second differential current signal, which is subtracted from the first differential current signal to obtain a differential output signal. The second differential current signal tracks an error current in the first differential current signal so that the differential output signal is zero when the differential input signal is equal to a target input offset voltage for the amplifier. For each unbalanced differential pair, one transistor is M times the size of the other transistor, with M being selected to obtain the target input offset voltage.

    摘要翻译: 描述了具有精确输入失调电压的放大器。 在一种设计中,放大器包括第一和第二不平衡差分对。 第一不平衡差分对接收差分输入信号并提供第一差分电流信号。 第二不平衡差分对接收差分参考信号,并提供从第一差分电流信号中减去的第二差分电流信号,以获得差分输出信号。 第二差分电流信号跟踪第一差分电流信号中的误差电流,使得当差分输入信号等于放大器的目标输入失调电压时,差分输出信号为零。 对于每个不平衡差分对,一个晶体管是另一个晶体管尺寸的M倍,其中M被选择以获得目标输入偏移电压。