公开(公告)号：US20240187016A1

公开(公告)日：2024-06-06

申请号：US18098544

申请日：2023-01-18

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Vamsikrishna PARUPALLI ,  Mikel ASH ,  Jianping WEN ,  Melvin L. HAGGE

IPC: H03M1/46

CPC classification number: H03M1/466

Abstract: A SAR ADC may include a plurality of capacitor networks, wherein each capacitor network of the a plurality of capacitor networks has a plurality of sampling capacitors for sampling over a plurality of sampling sub-phases an analog input signal to the SAR ADC and at least one non-sampling capacitor. The SAR ADC may also include a DAC comprising a plurality of sub-DACs including at least a first sub-DAC representing most significant bits of an output of the SAR ADC, wherein the output of the first sub-DAC is coupled to the sampling capacitors of the plurality of capacitor networks and a second sub-DAC representing bits of the output of the SAR ADC lesser in magnitude significance than those of the first sub-DAC, wherein the output of the second sub-DAC is coupled to a respective one of at least one non-sampling capacitor of each of the plurality of capacitor networks.

公开(公告)号：US20240097683A1

公开(公告)日：2024-03-21

申请号：US17948442

申请日：2022-09-20

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Donelson A. SHANNON ,  Jianping WEN

IPC: H03K19/0185 ,  G11C5/14 ,  G11C17/00

CPC classification number: H03K19/018507 ,  G11C5/14 ,  G11C17/00

Abstract: A system may include a first power domain defined by a first supply rail and a first ground rail, a second power domain defined by a second supply rail and a second ground rail, and a configurable switch coupled between the first ground rail and the second ground rail such that when the configurable switch is enabled, the first ground rail and the second ground rail are electrically shorted to one another and when the configurable switch is disabled, the first ground rail and the second ground rail are electrically isolated from one another.