The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 2020
Filed:
Dec. 28, 2018
Texas Instruments Incorporated, Dallas, TX (US);
Sai Aditya KrishnaSwamy Nurani, Hyderabad, IN;
Arun Mohan, Bengaluru, IN;
Shagun Dusad, Bengaluru, IN;
Neeraj Shrivastava, Bengaluru, IN;
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
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.