Invention Grant
- Patent Title: Timing skew error correction apparatus and methods
- Patent Title (中): 定时偏差纠错装置及方法
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Application No.: US12948757Application Date: 2010-11-18
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Publication No.: US08269528B2Publication Date: 2012-09-18
- Inventor: Robert Floyd Payne , Philip M. Pratt , William David Smith
- Applicant: Robert Floyd Payne , Philip M. Pratt , William David Smith
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent John J. Patti; Wade J. Brady, III; Frederick J. Telecky, Jr.
- Main IPC: G11C27/02
- IPC: G11C27/02

Abstract:
Apparatus and methods disclosed herein operate to compensate for skew between inverse phases (e.g., differential phases) of an analog signal appearing at the inputs of an analog signal capture circuit such as a track-and-hold or sample-and-hold circuit associated with an ADC or similar device. Each of two capture clocks is used to capture one of the inverse phases. One or more delay circuits are configured to create a differential delay between clock transitions associated with the two capture clocks. The differential delay is proportional to the input skew between the inverse phases. The phases are consequently sampled at substantially identical points on a phase domain axis. Embodiments operate to create phase sampling synchronicity and to thereby decrease the amplitude of a common-mode signal component that results from the skew. Increased linearity and decreased distortion may result.
Public/Granted literature
- US20120126869A1 TIMING SKEW ERROR CORRECTION APPARATUS AND METHODS Public/Granted day:2012-05-24
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