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:
Sep. 01, 2020
Filed:
Oct. 23, 2019
Texas Instruments Incorporated, Dallas, TX (US);
Uttam Kumar Agarwal, Bengaluru, IN;
Anand Kannan, Bengaluru, IN;
Ramamurthy Vishweshwara, Bengaluru, IN;
Anand Subramanian, Bengaluru, IN;
Pedro Ramon Gelabert, Allen, TX (US);
Diljith Mathal Thodi, Bengaluru, IN;
Abhijit Anant Patki, Bengaluru, IN;
TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US);
Abstract
A circuit includes a programmable gain amplifier (PGA) having a PGA output. The circuit further includes a delta-sigma modulator having an input coupled to the PGA output. The circuit also includes a digital filter and a dynamic range enhancer (DRE) circuit. The digital filter is coupled to the delta-sigma modulator output. The DRE circuit is coupled to the delta-sigma modulator output and to the PGA. The DRE circuit is configured to monitor a signal level of the delta-sigma modulator output. Responsive to the signal level being less than a DRE threshold, the DRE circuit is configured to program the PGA for a gain level greater than unity gain and to cause the digital filter to implement an attenuation of a same magnitude as the gain level to be programmed into the PGA.