Invention Grant
US09515604B2 Driving crystal oscillator startup at above, below and operating frequency
有权
驱动晶体振荡器启动在上方，下方和工作频率
- Patent Title: Driving crystal oscillator startup at above, below and operating frequency
- Patent Title (中): 驱动晶体振荡器启动在上方，下方和工作频率
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Application No.: US14584726Application Date: 2014-12-29
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Publication No.: US09515604B2Publication Date: 2016-12-06
- Inventor: Danielle Griffith , Per Torstein Roine , James Murdock , Ryan Smith
- 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 Lawrence J. Bassuk; Frank D. Cimino
- Main IPC: H03B5/32
- IPC: H03B5/32 ; H03L7/24 ; H03B5/06 ; H03B5/36
Abstract:
A circuit includes a crystal oscillator to generate an output frequency for a circuit. A driving oscillator generates a startup signal having a driving frequency that is provided to activate the crystal oscillator. The driving frequency of the startup signal is varied over a range of frequencies that encompass the operating frequency of the crystal oscillator to facilitate startup of the crystal oscillator.
Public/Granted literature
- US20150333694A1 CRYSTAL OSCILLATOR STARTUP TIME REDUCTION Public/Granted day:2015-11-19
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