Invention Grant
- Patent Title: Oscillator having comparator circuits having adjustable driving capabilities and method for operating the same
- Patent Title (中): 具有可调整驱动能力的比较器电路的振荡器及其操作方法
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Application No.: US12283540Application Date: 2008-09-12
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Publication No.: US07863992B2Publication Date: 2011-01-04
- Inventor: Kyu-Young Chung
- Applicant: Kyu-Young Chung
- Applicant Address: KR
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR
- Agency: Mills & Onello, LLP
- Priority: KR10-2007-0093669 20070914
- Main IPC: H03K3/26
- IPC: H03K3/26

Abstract:
An oscillator includes a first comparator circuit, a second comparator circuit, an oscillation signal generator circuit, and a frequency voltage generator circuit. The first comparator circuit generates a first pulse when a frequency voltage reaches a first reference voltage, and the second comparator circuit generates a second pulse when the frequency voltage reaches a second reference voltage. The oscillation signal generator circuit generates an oscillation signal by latching a first voltage in response to the first pulse and latching a second voltage in response to the second pulse. The frequency voltage generator circuit raises or lowers the frequency voltage in response to the oscillation signal. The driving capability of the first comparator circuit is reduced at the latching of the first voltage and is restored at the latching of the second voltage. The driving capability of the second comparator circuit is reduced at the latching of the second voltage and is restored at the latching of the first voltage.
Public/Granted literature
- US20090072918A1 Oscillator and method for operating the same Public/Granted day:2009-03-19
Information query
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