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:
Oct. 07, 2014
Filed:
Oct. 23, 2013
Analog Devices, Inc., Norwood, MA (US);
Botao Miao, Sunnyvale, CA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
The present subject matter discusses, among other things, apparatus and methods for a delay line. In an example, a delay device can include a first node, a plurality of variable capacitor circuits configured to receive a capacitance set point voltage, a current source, a plurality of switches configured to selectively couple a respective variable capacitor of the plurality of variable capacitors to the first node, an input switch configured to receive an input signal and to couple and decouple the current source to the first node responsive to a state of the input signal, and a comparator configured to receive a reference voltage, to receive a voltage from the first node, and to provide an binary output indicative of a comparison between the reference voltage and the voltage from the first node, wherein the binary output is a delayed representation of the input signal.