公开(公告)号：US10686461B1

公开(公告)日：2020-06-16

申请号：US16234685

申请日：2018-12-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sai Aditya KrishnaSwamy Nurani ,  Arun Mohan ,  Shagun Dusad ,  Neeraj Shrivastava

IPC: H03M1/06 ,  H03F1/32 ,  H03F3/45 ,  H04B1/38

Abstract: A top-plate sampling analog-to-digital converter (ADC) circuit includes a first ADC stage and a residue amplifier coupled to the first ADC stage. The residue amplifier comprises a first transistor with a control terminal, a first current terminal, and a second current terminal. The residue amplifier also comprises a second transistor with a control terminal, a first current terminal, and a second current terminal. The residue amplifier also comprises a linearity adjustment circuit coupled to a second current terminal of at least one of the first transistor and the second transistor. The linearity adjustment circuit comprises at least one switch that changes its state as a function of an input sampling phase and a gain phase of the residue amplifier.

公开(公告)号：US10523231B1

公开(公告)日：2019-12-31

申请号：US16233642

申请日：2018-12-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sai Aditya KrishnaSwamy Nurani ,  Shagun Dusad ,  Visvesvaraya Appala Pentakota

IPC: H03M1/38 ,  H03M1/16 ,  H03M1/12 ,  H03M1/46

Abstract: A pipelined analog-to-digital converter (ADC) circuit includes a first ADC stage and a residue stage coupled to the first ADC stage. The residue stage includes a dynamic integrator configured to provide transconductance, wherein the dynamic integrator includes a boost circuit configured to boost an output impedance of the transconductance.