公开(公告)号：US10914805B2

公开(公告)日：2021-02-09

申请号：US15954826

申请日：2018-04-17

Applicant: National Applied Research Laboratories

Inventor： Chih-Yuan Yeh ,  Po-Chang Wu ,  Hann-Huei Tsai ,  Ying-Zong Juang

IPC: G01R35/00 ,  H03M1/00

Abstract: A signal error calibrating method is disclosed herein and includes following steps: filtering an error voltage in a sensor by a low pass filter in a calibration mode; converting the offset voltage to be a digital offset signal by an analog digital signal converter; converting the digital offset signal to be an offset calibrating signal by a digital analog signal converter; transmitting the offset calibrating signal to an input end of the sensor so as to offset an error voltage at the input end of the sensor. After calibrating the error voltage, the analog digital converter in the error calibrating circuit can be used for the need of signal output and the low pass filter is turned off at the same time.

公开(公告)号：US09118338B2

公开(公告)日：2015-08-25

申请号：US14175279

申请日：2014-02-07

Applicant: National Applied Research Laboratories

Inventor： Ying-Zong Juang ,  Hann-Huei Tsai ,  Po-Chang Wu ,  Chih-Yuan Yeh ,  Kuei-Cheng Lin

IPC: H03M1/06 ,  H03F3/45

CPC classification number: H03M1/06 ,  H03F3/45183 ,  H03F3/45192 ,  H03F3/456 ,  H03F3/45748 ,  H03F3/45753 ,  H03F2200/321 ,  H03F2203/45212 ,  H03F2203/45514

Abstract: A current-steering offset compensation circuit is configured for compensating an offset caused by process variation or environment variation of a signal processor. The signal processor includes a pair of differential input terminals and a pair of differential output terminals. The current-steering offset compensation circuit comprises a current-steering circuit connected with the signal processor, a digital control unit which generates a digital control signal according to the outputs from the pair of differential output terminals of the signal processor, and a digital-to-analog converter which receives the digital control signal and outputs a control voltage, wherein the current-steering circuit receives the control voltage, so as to steer the current of the pair of differential input terminals, to reduce the offset in the signal processor.

Abstract translation: 电流引导偏移补偿电路被配置为补偿由信号处理器的过程变化或环境变化引起的偏移。 信号处理器包括一对差分输入端子和一对差分输出端子。 电流转向偏移补偿电路包括与信号处理器连接的电流转向电路，数字控制单元，其根据来自信号处理器的差分输出端子对的输出产生数字控制信号，数字至 所述变流器接收所述数字控制信号并输出​​控制电压，其中所述电流转向电路接收所述控制电压，以便引导所述一对差分输入端子的电流，以减小所述信号处理器中的偏移。

公开(公告)号：US20150171885A1

公开(公告)日：2015-06-18

申请号：US14175279

申请日：2014-02-07

Applicant: National Applied Research Laboratories

Inventor： Ying-Zong JUANG ,  Hann-Huei Tsai ,  Po-Chang Wu ,  Chih-Yuan Yeh ,  Kuei-Cheng Lin

IPC: H03M1/66

CPC classification number: H03M1/06 ,  H03F3/45183 ,  H03F3/45192 ,  H03F3/456 ,  H03F3/45748 ,  H03F3/45753 ,  H03F2200/321 ,  H03F2203/45212 ,  H03F2203/45514

Abstract: A current-steering offset compensation circuit is configured for compensating an offset caused by process variation or environment variation of a signal processor. The signal processor includes a pair of differential input terminals and a pair of differential output terminals. The current-steering offset compensation circuit comprises a current-steering circuit connected with the signal processor, a digital control unit which generates a digital control signal according to the outputs from the pair of differential output terminals of the signal processor, and a digital-to-analog converter which receives the digital control signal and outputs a control voltage, wherein the current-steering circuit receives the control voltage, so as to steer the current of the pair of differential input terminals, to reduce the offset in the signal processor.

Abstract translation: 电流引导偏移补偿电路被配置为补偿由信号处理器的过程变化或环境变化引起的偏移。 信号处理器包括一对差分输入端子和一对差分输出端子。 电流转向偏移补偿电路包括与信号处理器连接的电流转向电路，数字控制单元，其根据来自信号处理器的差分输出端子对的输出产生数字控制信号，数字至 所述变流器接收所述数字控制信号并输出​​控制电压，其中所述电流转向电路接收所述控制电压，以便引导所述一对差分输入端子的电流，以减小所述信号处理器中的偏移。