会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 23. 发明申请
    • AUTOMATICALLY CALIBRATING OPERATIONAL AMPLIFIER (OP-AMP) SYSTEMS FOR MITIGATING EFFECTS OF OFFSET VOLTAGES
    • 自动校准操作放大器(OP-AMP)系统,以减少偏置电压的影响
    • US20170047903A1
    • 2017-02-16
    • US15085122
    • 2016-03-30
    • QUALCOMM Incorporated
    • Burt Lee PriceYeshwant Nagaraj KollaDhaval Rajeshbhai ShahAjay Janardanan
    • H03F3/45
    • H03F3/45071H03F3/45973H03F2200/153H03F2200/78H03F2203/45048
    • Automatically calibrating operational amplifier (op-amp) systems for mitigating effects of offset voltages are disclosed. In one aspect, an automatically calibrating op-amp system is provided that employs an analog calibration signal corresponding to a calibration mode to compensate an output voltage signal of an op-amp corresponding to an amplify mode. An automatic calibration circuit is included that employs a successive approximation register (SAR) controller configured to successively generate digital values based on the output voltage signal of the op-amp in response to a mode signal indicating the calibration mode. The automatic calibration circuit includes a digital-to-analog converter (DAC) configured to convert each successive digital value into the analog calibration signal in response to the mode signal indicating the calibration mode. The analog calibration signal is provided to an auxiliary differential input of the op-amp to compensate for the composite offset voltage in the amplify mode.
    • 公开了用于减轻失调电压影响的运算放大器(运算放大器)系统的自动校准。 一方面,提供一种自动校准运算放大器系统,其采用对应于校准模式的模拟校准信号来补偿与放大模式相对应的运算放大器的输出电压信号。 包括一种自动校准电路,其采用逐次逼近寄存器(SAR)控制器,其配置为响应于指示校准模式的模式信号,基于运算放大器的输出电压信号连续生成数字值。 自动校准电路包括被配置为响应于指示校准模式的模式信号将每个连续的数字值转换成模拟校准信号的数模转换器(DAC)。 将模拟校准信号提供给运算放大器的辅助差分输入,以补偿放大模式下的复合失调电压。
    • 27. 发明申请
    • Measuring Amplifier with Background Adjustment and Method Therefor
    • 具有背景调整功能的测量放大器及其方法
    • US20160298987A1
    • 2016-10-13
    • US14916398
    • 2014-09-05
    • HOTTINGER BALDWIN MESSTECHNIK GMBH
    • Marco M. SCHAECKHerbert KITZING
    • G01D18/00H03F3/45
    • G01D18/00G01D18/004H03F3/45071H03F2200/261H03F2200/375H03M1/1004H03M1/1028H03M1/12
    • The present invention relates to a measuring amplifier (103) with background calibration and adjustment, as well as to a method for carrying out the background calibration and adjustment for such a measuring amplifier. The measuring amplifier amplifies, digitizes and processes at least one measurement signal (111) from at least one measuring transducer (102) with the aid of at least one amplifier arrangement (108). This can be intermittently replaced by an additional amplifier arrangement (107), which enables its interruption-free calibration and, if necessary, adjustment. In the calibration, both a zero point error as well as an amplification error of the amplifier arrangement are reliably determined. Moreover, the amplifier arrangement is calibrated directly and not indirectly. Thereby a high accuracy is achieved without measurement interruption. Furthermore, only one additional amplifier arrangement is generally required, even for a measuring amplifier with plural channels.
    • 本发明涉及具有背景校准和调整的测量放大器(103)以及用于对这种测量放大器执行背景校准和调整的方法。 所述测量放大器借助于至少一个放大器装置(108)放大,数字化并处理来自至少一个测量传感器(102)的至少一个测量信号(111)。 这可以被额外的放大器布置(107)间歇地替代,这使得其无中断校准和必要时进行调整。 在校准中,可靠地确定放大器布置的零点误差以及放大误差。 此外,放大器布置被直接校准,而不是间接校准。 从而在没有测量中断的情况下实现高精度。 此外,即使对于具有多个通道的测量放大器,通常仅需要一个附加的放大器布置。