利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

43 records (took 0.029 seconds)

    Amplifiers with input offset trim and methods
    22.
    发明公开
    Amplifiers with input offset trim and methods 有权
    放大器的输入失调和方法

    公开(公告)号：EP2221974A3

    公开(公告)日：2010-11-10

    申请号：EP10153869.2

    申请日：2010-02-17

    Applicant: Number 14 B.V.

    Inventor： Eschauzier, Rudy G. H. ,  Van Rijn, Nico

    IPC: H03M1/06 ,  H03F3/45

    CPC classification number: H03F3/45753 ,  H03M1/0692 ,  H03M1/46 ,  H03M1/745

    Abstract: Amplifiers with power-on trim and methods using an amplifier system having an amplifier system input and an amplifier system output, an amplifier, a comparator, a successive approximation register having an input coupled to an output of the comparator, a first switch for switching an input of the amplifier from the amplifier system input to shorting the amplifier input, a second switch for switching an output of the amplifier from the amplifier system output to an input of the comparator, an output of the successive approximation register being coupled to an N bit digital to analog (D/A) converter, the D/A converter being a non-binary converter using a radix of less than 2 for at least the most significant bits, and an output of the D/A converter being coupled to the amplifier to control the input offset of the amplifier. Novel embodiments for the amplifier, comparator and D/A converter are disclosed.

    Multi-stage, low-offset, fast recovery, comparator system and method
    27.
    发明公开
    Multi-stage, low-offset, fast recovery, comparator system and method 有权
    Mehrstufiges Komparatorsystem und -Verfahren mit schneller Erholungszeit und geringem Offset

    公开(公告)号：EP1091489A2

    公开(公告)日：2001-04-11

    申请号：EP00307335.0

    申请日：2000-08-25

    Applicant: ANALOG DEVICES, INCORPORATED

    Inventor： Amazeen, Bruce Edward ,  Coln, Michael C.W. ,  Wayne, Scott ,  Miller, Gerald A. ,  Mueck, Mick

    IPC: H03K5/24

    CPC classification number: H03K5/249 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45753 ,  H03F3/45977 ,  H03F2203/45702 ,  H03K5/2481

    Abstract: A multi-stage, low-offset, fast-recovery, comparator system and method for: reducing the input offset voltage of the zeroing amplifier by a factor essentially equal to gain of the zeroing amplifier; reducing the input offset voltage of the combined main and zeroing amplifiers by a factor essentially equal to the product of the gains of the main and zeroing amplifiers; and amplifying the input signal to the amplification stage in accordance with the gain of the main amplifier to generate an amplified high-resolution signal.

    Abstract translation: 一种多级，低失调，快速恢复，比较器系统和方法，用于将归零放大器的输入失调电压减小到基本等于归零放大器增益的因子; 降低组合的主和归零放大器的输入失调电压，其基本等于主放大器和归零放大器的增益的乘积; 并根据主放大器的增益将输入信号放大到放大级，以产生放大的高分辨率信号。

    Offset corrected amplifier
    29.
    发明公开
    Offset corrected amplifier 失效
    Offst-korrigierterVerstärker。

    公开(公告)号：EP0243792A1

    公开(公告)日：1987-11-04

    申请号：EP87105553.9

    申请日：1987-04-14

    Applicant: International Business Machines Corporation

    Inventor： Bertsch, John Edward

    IPC: H03F1/30 ,  H03F3/45

    CPC classification number: H03F3/45977 ,  H03F1/303 ,  H03F3/45753

    Abstract: An amplifier circuit having offset voltage and offset voltage drift corrections which does not require resistive feedback and is suitable for use with unmatched high frequency field effect transistor circuits. The circuit cancels the offset voltage of a signal amplifier (10,20) and comprises means (11-14; 21-24) for applying differential voltages to an operational amplifier (10;20), together with a switchable feedback connecting the output of the amplifier to one of its inputs and a capacitor (14;24) coupled between the feedback input (10b,20b) of the amplifier, and one of the differential voltages. This allows amplifying of low level AC signals while reducing the error introduced by the offset voltage or the offset voltage drift of the amplifier.

    Abstract translation: 具有偏移电压和偏移电压漂移校正的放大器电路，其不需要电阻反馈并且适用于不匹配的高频场效应晶体管电路。 电路消除信号放大器（10,20）的偏移电压，并且包括用于向运算放大器（10; 20）施加差分电压的装置（11-14; 21-24），连同可切换反馈，连接 所述放大器到其输入之一以及耦合在所述放大器的反馈输入端（10b，20b）之间的电容器（14; 24）和所述差分电压之一。 这允许放大低电平AC信号，同时减少由偏移电压引起的误差或放大器的偏移电压漂移。

Patent Agency Ranking