公开(公告)号：US10938401B1

公开(公告)日：2021-03-02

申请号：US16693557

申请日：2019-11-25

Applicant: NXP B.V.

Inventor： Erik Olieman ,  Alphons Litjes ,  Ibrahim Candan

IPC: H03M1/00 ,  H03M1/46 ,  H03M1/42 ,  H03M1/80 ,  H03M1/78 ,  H03M1/68

Abstract: Embodiments of an analog-to-digital converter (ADC), resistive digital-to-analog converter (DAC) circuits, and methods of operating an ADC are disclosed. In an embodiment, an analog-to-digital converter includes a DAC unit configured to convert a digital code to a first voltage in response to an input voltage of the ADC, a comparator configured to compare the first voltage with a second voltage to generate a comparison output, and a logic circuit configured to generate the digital code, to control the DAC unit based on the comparison output, and to output the digital code as a digital output of the ADC. The DAC unit includes a capacitive DAC and multiple resistive DACs. Each of the resistive DACs is connected to the first voltage through a respective capacitor.