Linearity improvement for segmented R-DACs

    公开(公告)号:US10756744B1

    公开(公告)日:2020-08-25

    申请号:US16515961

    申请日:2019-07-18

    Applicant: Apple Inc.

    Abstract: Various embodiments of a segmented R-DAC are disclosed. In one embodiment, a segmented R-DAC includes first and second DACs arranged to receive most and least significant bits, respectively. The segmented R-DAC also includes a first capacitor coupled between an output of the first DAC and an output of the second DAC, and a second capacitor coupled between the output of the second DAC and a ground node. The capacitance of the second capacitor has a value that is a predetermined multiple of the capacitance value of the first capacitor.

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