公开(公告)号：US20200067518A1

公开(公告)日：2020-02-27

申请号：US16654062

申请日：2019-10-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yujendra MITIKIRI ,  Minkle Eldho PAUL ,  Anukruti CHAKRABORTY

IPC: H03M1/08

Abstract: An analog-to-digital converter (ADC) includes a comparator, a voltage reference circuit, a first capacitive digital-to-analog converter (CDAC), and a second CDAC. The first CDAC includes a plurality of capacitors. Each of the capacitors of the first CDAC includes a top plate coupled to a first input of the comparator, and a bottom plate switchably coupled to an output of the voltage reference circuit. The second CDAC includes a plurality of capacitors. Each of the capacitors of the second CDAC includes a top plate coupled to a second input of the comparator, and a bottom plate switchably coupled to a ground reference.

公开(公告)号：US20210013895A1

公开(公告)日：2021-01-14

申请号：US17039313

申请日：2020-09-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yujendra MITIKIRI ,  Minkle Eldho PAUL ,  Anukruti CHAKRABORTY

IPC: H03M1/08 ,  H03M1/46

Abstract: An analog-to-digital converter (ADC) includes a comparator, a voltage reference circuit, a first capacitive digital-to-analog converter (CDAC), and a second CDAC. The first CDAC includes a plurality of capacitors. Each of the capacitors of the first CDAC includes a top plate coupled to a first input of the comparator, and a bottom plate switchably coupled to an output of the voltage reference circuit. The second CDAC includes a plurality of capacitors. Each of the capacitors of the second CDAC includes a top plate coupled to a second input of the comparator, and a bottom plate switchably coupled to a ground reference.

公开(公告)号：US20210119638A1

公开(公告)日：2021-04-22

申请号：US17112095

申请日：2020-12-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sovan GHOSH ,  Minkle Eldho PAUL ,  Laxmi Vivek TRIPURARI ,  Amal KUMAR KUNDU

IPC: H03M1/46 ,  H03M1/12 ,  H03M1/10

Abstract: An analog-to-digital converter (ADC) circuit includes a signal input terminal, a sample-and-hold circuit, and a successive approximation register (SAR) ADC. The sample-and-hold circuit includes an input terminal coupled to the signal input terminal. The SAR ADC includes a comparator, a first capacitive digital-to-analog converter (CDAC), and a second CDAC. The first CDAC includes a first input terminal coupled to the signal input terminal, a second input terminal coupled to an output terminal of the sample-and-hold circuit, and an output terminal coupled to a first input terminal of the comparator. The second CDAC includes a first input terminal coupled to the signal input terminal, an output terminal coupled to a second input terminal of the comparator.

公开(公告)号：US20190207615A1

公开(公告)日：2019-07-04

申请号：US15902092

申请日：2018-02-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Yujendra MITIKIRI ,  Minkle Eldho PAUL ,  Anukruti CHAKRABORTY

IPC: H03M1/08

Abstract: An analog-to-digital converter (ADC) includes a comparator, a voltage reference circuit, a first capacitive digital-to-analog converter (CDAC), and a second CDAC. The first CDAC includes a plurality of capacitors. Each of the capacitors of the first CDAC includes a top plate coupled to a first input of the comparator, and a bottom plate switchably coupled to an output of the voltage reference circuit. The second CDAC includes a plurality of capacitors. Each of the capacitors of the second CDAC includes a top plate coupled to a second input of the comparator, and a bottom plate switchably coupled to a ground reference.