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:
Jul. 29, 2014
Filed:
Aug. 31, 2012
Gautam S. Nandi, Bangalore, IN;
Rishubh Khurana, Delhi, IN;
Gautam S. Nandi, Bangalore, IN;
Rishubh Khurana, Delhi, IN;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A pipeline ADC (analog-to-digital converter) () includes a residue amplifier () for applying a first residue signal (Vres) to a first input of a residue amplifier (A) and to an input of a sub-ADC () for resolving a predetermined number (m) of bits and producing a redundancy bit in response to the first residue signal. A level-shifting MDAC (A) converts the predetermined number of bits and the redundancy bit to an analog signal () on the a second input of the residue amplifier, which amplifies the difference between the first residue signal and the analog signal to generate a second residue signal (Vres). The MDAC causes the residue amplifier to shift the second residue signal back within a predetermined voltage range (±Vref/2) by the end of the amplifying if the second residue signal is outside of the predetermined voltage range.