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:
Jan. 04, 2022
Filed:
Jan. 21, 2021
Analog Devices International Unlimited Company, Limerick, IE;
Sharvil Pradeep Patil, Toronto, CA;
Donald W. Paterson, Winchester, MA (US);
Prawal Man Shrestha, San Diego, CA (US);
Asha Ganesan, Toronto, CA;
Yue Yin, Woodbridge, CA;
Zhao Li, Toronto, CA;
Victor Kozlov, Toronto, CA;
Hajime Shibata, Toronto, CA;
ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY, Limerick, IE;
Abstract
In one aspect, a transfer function (TF) estimation circuit configured to generate an estimate of a TF undergone by signals between an input of a digital-to-analog converter (DAC) of a feedforward path of a continuous-time (CT) stage of an analog-to-digital converter (ADC) and an output of a backend ADC of the ADC is disclosed. The TF estimation circuit includes one or more circuits configured to generate a first cross-correlation output by cross-correlating digital versions of signals based on a test signal provided to the CT stage and an output signal of the backend ADC, generate a second cross-correlation output by cross-correlating digital versions of signals based on the test signal and an output signal of a quantizer of the feedforward path of the CT stage, and generate the estimate of the TF based on the first and second cross-correlation outputs.