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:
Dec. 08, 2020
Filed:
Dec. 03, 2019
Stmicroelectronics International N.v., Schiphol, NL;
Ankur Bal, Greater Noida, IN;
Rupesh Singh, Ghaziabad, IN;
STMicroelectronics International N.V., Schiphol, NL;
Abstract
A continuous time Delta-Sigma (CT-ΔΣ) modulator has an input node configured to receive an input signal and an output node configured to output a digital output signal. The CT-ΔΣ modulator includes a feedback loop with a summation circuit configured to sum the digital output signal with a jitter perturbed test signal to generate a signal supplied to an input of a digital to analog converter circuit. A single tone signal is injected with a jitter error of a clock signal to generate the jitter perturbed test signal. A processing circuit processes the digital output signal to detect a signal to noise ratio of the CT-ΔΣ modulator. The detected signal to noise ratio is indicative of presence of jitter in the clock signal.