公开(公告)号：US09698741B2

公开(公告)日：2017-07-04

申请号：US15276002

申请日：2016-09-26

Applicant: IXYS Corporation

Inventor： Eric Blom

IPC: H03F1/02 ,  H03F3/393 ,  H03F1/26 ,  H03F3/45 ,  H03H19/00

CPC classification number: H03F3/393 ,  H03F1/26 ,  H03F3/45192 ,  H03F3/45475 ,  H03F2200/171 ,  H03F2200/271 ,  H03F2200/411 ,  H03F2200/555 ,  H03F2203/45514 ,  H03H19/004

Abstract: A chopper stabilzed amplifier with synchronous switched capacitor noise filtering is disclosed. In an exemplary embodiment, an apparatus includes a chopper amplifier having an input that receives an input signal and an output that outputs an amplified signal. The chopper amplifier includes an input chopping circuit and an output chopping circuit, where the input and output chopping circuits operate in response to a chop clock. The apparatus also includes a switched capacitor filter having an input that receives the amplified signal and an output that outputs a filtered signal. The switched capacitor filter operates in response to a filter clock. The apparatus also includes a filter timing adjuster that receives a reference voltage and adjusts a phase of the filter clock with respect to the chop clock to reduce chopper noise on that reference voltage.

公开(公告)号：US20170077881A1

公开(公告)日：2017-03-16

申请号：US15276002

申请日：2016-09-26

Applicant: IXYS Corporation

Inventor： Eric Blom

IPC: H03F3/393 ,  H03F3/45 ,  H03F1/26

CPC classification number: H03F3/393 ,  H03F1/26 ,  H03F3/45192 ,  H03F3/45475 ,  H03F2200/171 ,  H03F2200/271 ,  H03F2200/411 ,  H03F2200/555 ,  H03F2203/45514 ,  H03H19/004

Abstract: A chopper stabilzed amplifier with synchronous switched capacitor noise filtering is disclosed. In an exemplary embodiment, an apparatus includes a chopper amplifier having an input that receives an input signal and an output that outputs an amplified signal. The chopper amplifier includes an input chopping circuit and an output chopping circuit, where the input and output chopping circuits operate in response to a chop clock. The apparatus also includes a switched capacitor filter having an input that receives the amplified signal and an output that outputs a filtered signal. The switched capacitor filter operates in response to a filter clock. The apparatus also includes a filter timing adjuster that receives a reference voltage and adjusts a phase of the filter clock with respect to the chop clock to reduce chopper noise on that reference voltage.

Abstract translation: 公开了具有同步开关电容噪声滤波的斩波稳定放大器。 在示例性实施例中，一种装置包括具有接收输入信号的输入和输出放大信号的输出的斩波放大器。 斩波放大器包括输入斩波电路和输出斩波电路，其中输入和输出斩波电路响应于斩波时钟而工作。 该装置还包括具有接收放大信号的输入端和输出滤波信号的输出的开关电容滤波器。 开关电容滤波器响应于滤波器时钟而工作。 该装置还包括滤波器定时调节器，其接收参考电压并相对于斩波时钟调节滤波器时钟的相位，以减小该参考电压的斩波噪声。

公开(公告)号：US09473074B1

公开(公告)日：2016-10-18

申请号：US14852921

申请日：2015-09-14

Applicant: IXYS Corporation

Inventor： Eric Blom

IPC: H03F1/02 ,  H03F1/26 ,  H03F3/393

CPC classification number: H03F3/393 ,  H03F1/26 ,  H03F3/45192 ,  H03F3/45475 ,  H03F2200/171 ,  H03F2200/271 ,  H03F2200/411 ,  H03F2200/555 ,  H03F2203/45514 ,  H03H19/004

Abstract: A chopper stabilized amplifier with synchronous switched capacitor noise filtering is disclosed. In an exemplary embodiment, an apparatus includes a chopper amplifier having an input that receives an input signal and an output that outputs an amplified signal. The chopper amplifier includes an input chopping circuit and an output chopping circuit, where the input and output chopping circuits operate in response to a chop clock. The apparatus also includes a switched capacitor filter having an input that receives the amplified signal and an output that outputs a filtered signal. The switched capacitor filter operates in response to a filter clock. The apparatus also includes a filter timing adjuster that receives a reference voltage and adjusts a phase of the filter clock with respect to the chop clock to reduce chopper noise on that reference voltage.

Abstract translation: 公开了具有同步开关电容噪声滤波的斩波稳定放大器。 在示例性实施例中，一种装置包括具有接收输入信号的输入和输出放大信号的输出的斩波放大器。 斩波放大器包括输入斩波电路和输出斩波电路，其中输入和输出斩波电路响应于斩波时钟而工作。 该装置还包括具有接收放大信号的输入端和输出滤波信号的输出的开关电容滤波器。 开关电容滤波器响应于滤波器时钟而工作。 该装置还包括滤波器定时调节器，其接收参考电压并相对于斩波时钟调节滤波器时钟的相位，以减小该参考电压的斩波噪声。

公开(公告)号：US09857823B2

公开(公告)日：2018-01-02

申请号：US15081880

申请日：2016-03-26

Applicant: IXYS Corporation

Inventor： Eric Blom ,  Anatoliy Tsyrganovich ,  James Anderson

IPC: H01L35/00 ,  H01L37/00 ,  H03K3/42 ,  H03K17/78 ,  G05F3/16 ,  G05F3/04 ,  H03M1/10 ,  G05F1/46 ,  H03M1/66

CPC classification number: G05F3/16 ,  G05F1/461 ,  G05F3/04 ,  H03M1/1047 ,  H03M1/66

Abstract: A programmable temperature compensated voltage reference is disclosed. In an exemplary embodiment, an apparatus includes a digital-to-analog converter (DAC) that uses a reference voltage and a code to generate a DAC output voltage. The apparatus also includes a temperature compensator that uses a temperature measurement (T) and the DAC code to generate a temperature compensation signal. The temperature compensation signal is represented by a third order polynomial equation. The apparatus also includes a signal combiner that combines the DAC output voltage and the temperature compensation signal to generate a temperature compensated programmable reference voltage.

公开(公告)号：US20170031380A1

公开(公告)日：2017-02-02

申请号：US15081880

申请日：2016-03-26

Applicant: IXYS Corporation

Inventor： Eric Blom ,  Anatoliy Tsyrganovich ,  James Anderson

IPC: G05F3/16 ,  G05F1/46

CPC classification number: G05F3/16 ,  G05F1/461 ,  G05F3/04 ,  H03M1/1047 ,  H03M1/66

Abstract: A programmable temperature compensated voltage reference is disclosed. In an exemplary embodiment, an apparatus includes a digital-to-analog converter (DAC) that uses a reference voltage and a code to generate a DAC output voltage. The apparatus also includes a temperature compensator that uses a temperature measurement (T) and the DAC code to generate a temperature compensation signal. The temperature compensation signal is represented by a third order polynomial equation. The apparatus also includes a signal combiner that combines the DAC output voltage and the temperature compensation signal to generate a temperature compensated programmable reference voltage.

Abstract translation: 公开了可编程温度补偿电压基准。 在示例性实施例中，装置包括使用参考电压和代码来产生DAC输出电压的数模转换器（DAC）。 该装置还包括使用温度测量（T）和DAC代码产生温度补偿信号的温度补偿器。 温度补偿信号由三阶多项式方程表示。 该装置还包括组合DAC输出电压和温度补偿信号以产生温度补偿可编程参考电压的信号组合器。

公开(公告)号：US09331707B1

公开(公告)日：2016-05-03

申请号：US14810998

申请日：2015-07-28

Applicant: IXYS Corporation

Inventor： Eric Blom ,  Anatoliy Tsyrganovich ,  James Anderson

IPC: H01L35/00 ,  H01L37/00 ,  H03K3/42 ,  H03K17/78 ,  H03M1/06 ,  G05F3/04 ,  H03M1/66

CPC classification number: G05F3/16 ,  G05F1/461 ,  G05F3/04 ,  H03M1/1047 ,  H03M1/66

Abstract: A programmable temperature compensated voltage reference is disclosed. In an exemplary embodiment, an apparatus includes a digital-to-analog converter (DAC) that uses a reference voltage and a code to generate a DAC output voltage. The apparatus also includes a temperature compensator that uses a temperature measurement (T) and the DAC code to generate a temperature compensation signal. The temperature compensation signal is represented by a third order polynomial equation. The apparatus also includes a signal combiner that combines the DAC output voltage and the temperature compensation signal to generate a temperature compensated programmable reference voltage.

Abstract translation: 公开了可编程温度补偿电压基准。 在示例性实施例中，装置包括使用参考电压和代码来产生DAC输出电压的数模转换器（DAC）。 该装置还包括使用温度测量（T）和DAC代码产生温度补偿信号的温度补偿器。 温度补偿信号由三阶多项式方程表示。 该装置还包括组合DAC输出电压和温度补偿信号以产生温度补偿可编程参考电压的信号组合器。