Invention Grant
- Patent Title: Duty-cycle correction using balanced clocks
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Application No.: US15989623Application Date: 2018-05-25
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Publication No.: US10886906B1Publication Date: 2021-01-05
- Inventor: Bob W. Verbruggen , Christophe Erdmann , Conrado K. Mesadri
- Applicant: Xilinx, Inc.
- Applicant Address: US CA San Jose
- Assignee: Xilinx, Inc.
- Current Assignee: Xilinx, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Paradice and Li LLP
- Main IPC: H03K5/156
- IPC: H03K5/156 ; G06F1/10

Abstract:
A duty-cycle adjustment circuit receives a differential pair of input signals and generates an output signal based on the differential pair. The duty-cycle adjustment circuit drives the output signal to a logic-high state based on transitions of a first polarity in a first input signal of the differential pair, and drives the output signal to a logic-low state based on transitions of the first polarity in a second input signal of the differential pair. For example, rising-edge transitions of the output signal may be aligned with rising-edge transitions of the first input signal, and falling-edge transitions of the output signal may be aligned with rising-edge transitions of the second input signal. Alternatively, rising-edge transitions of the output signal may be aligned with falling-edge transitions of the first input signal, and falling-edge transitions of the output signal may be aligned with falling-edge transitions of the second input signal.
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