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. 27, 2009
Filed:
Jun. 08, 2007
Dan Baker, Medina, OH (US);
Michael D. Rayman, Akron, OH (US);
Dan Baker, Medina, OH (US);
Michael D. Rayman, Akron, OH (US);
Keithley Instruments, Inc., Cleveland, OH (US);
Abstract
A method for operating a DAC to minimize digital feedthrough includes inputting a clock signal to a DAC clock input, the clock signal having a periodic series of trigger events, wherein input data must be present for a time window between a setup time before a trigger event and a hold time after the trigger event; generating an input data stream, the input data stream having data that is present for the time window; altering the input data stream into a cancellation data stream wherein the data presence is maintained but pseudo-data outside of the time window is added; and applying the cancellation data stream to a DAC data input resulting in an analog signal output.