Successive Approximation Register Analog-to-Digital Converter and associated control method

    公开(公告)号:US11245408B2

    公开(公告)日:2022-02-08

    申请号:US17151673

    申请日:2021-01-19

    Abstract: A Successive Approximation Register Analog-to-Digital Converter (SAR ADC) is disclosed. The SAR ADC includes a switched capacitor array, a buffer, a comparator and a control logic circuit. The switched capacitor array is arranged to sample an input signal according to a switch control signal to generate a sampling signal. The buffer is arranged to generate a common mode voltage. The comparator is arranged to receive the sampling signal and the common mode voltage in order to generate a comparison result. The control logic circuit is arranged to generate an output signal according to the comparison result, and generate the switch control signal to control the switched capacitor array. The control logic circuit further generates an operation control signal to adjust a Miller compensation capacitor inside the buffer. An associated control method is also disclosed.

    SUCCESSIVE APPROXIMATION REGISTER ANALOG-TO-DIGITAL CONVERTER AND ASSOCIATED CONTROL METHOD

    公开(公告)号:US20210305990A1

    公开(公告)日:2021-09-30

    申请号:US17151673

    申请日:2021-01-19

    Abstract: A Successive Approximation Register Analog-to-Digital Converter (SAR ADC) is disclosed. The SAR ADC includes a switched capacitor array, a buffer, a comparator and a control logic circuit. The switched capacitor array is arranged to sample an input signal according to a switch control signal to generate a sampling signal. The buffer is arranged to generate a common mode voltage. The comparator is arranged to receive the sampling signal and the common mode voltage in order to generate a comparison result. The control logic circuit is arranged to generate an output signal according to the comparison result, and generate the switch control signal to control the switched capacitor array. The control logic circuit further generates an operation control signal to adjust a Miller compensation capacitor inside the buffer. An associated control method is also disclosed.

    CAPACITOR
    3.
    发明申请

    公开(公告)号:US20210304964A1

    公开(公告)日:2021-09-30

    申请号:US16942710

    申请日:2020-07-29

    Abstract: A capacitor includes a solid conductive plate, a first electrode, and a second electrode. The solid conductive plate is disposed above a substrate of a wafer. The solid conductive plate serves as a bottom plate of the capacitor. The first electrode is disposed above the solid conductive plate so that the solid conductive plate is located between the substrate and the first electrode. This first electrode serves as a top plate of the capacitor. The second electrode is disposed above the solid conductive plate, and is disposed beside the first electrode. The second electrode is electrically connected to the solid conductive plate.

Patent Agency Ranking