Invention Grant
- Patent Title: Duty-cycle calibration based on differential clock sensing
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Application No.: US16723508Application Date: 2019-12-20
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Publication No.: US10892742B2Publication Date: 2021-01-12
- Inventor: Yongseon Koh , Roland Ribeiro , Horia Giuroiu
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent John R. Pessetto; Charles A. Brill; Frank D. Cimino
- Main IPC: H03K3/017
- IPC: H03K3/017 ; G06F1/04 ; H03K5/156

Abstract:
A system includes a pseudo-differential clock path configured to convey a first clock signal and a second clock signal, wherein the second clock signal is inverted relative to the first clock signal. The system also includes a sensing circuit coupled to sensing nodes of the pseudo-differential clock path. The sensing circuit is configured to provide a sense signal based on a comparison of the first clock signal and the second clock signal at the sensing nodes. The system also includes a correction circuit coupled to the sensing circuit and to adjustment nodes of the pseudo-differential clock path. The correction circuit is configured to adjust the first clock signal and the second clock signal using digital-to-analog converters (DACs) and the sense signal.
Public/Granted literature
- US20200220528A1 DUTY-CYCLE CALIBRATION BASED ON DIFFERENTIAL CLOCK SENSING Public/Granted day:2020-07-09
Information query
IPC分类: