Invention Grant
US08952759B2 Circuit and method for controlling mixed mode controlled oscillator and CDR circuit using the same
有权
用于控制混合模式控制振荡器和CDR电路的电路和方法
- Patent Title: Circuit and method for controlling mixed mode controlled oscillator and CDR circuit using the same
- Patent Title (中): 用于控制混合模式控制振荡器和CDR电路的电路和方法
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Application No.: US13677946Application Date: 2012-11-15
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Publication No.: US08952759B2Publication Date: 2015-02-10
- Inventor: Ping-Ying Wang , Kuan-Hua Chao , Jeng-Horng Tsai
- Applicant: MediaTek Inc.
- Applicant Address: TW Hsin-Chu
- Assignee: MediaTek Inc.
- Current Assignee: MediaTek Inc.
- Current Assignee Address: TW Hsin-Chu
- Agency: McClure, Qualey & Rodack, LLP
- Main IPC: H03L7/00
- IPC: H03L7/00 ; H03L9/00 ; H03K3/03 ; H03K5/13 ; H03L7/089 ; H03L7/099 ; H03L7/113 ; H03K5/00 ; H04L7/033
Abstract:
A circuit for controlling a mixed mode controlled oscillator. The circuit comprises a charge pump, and a digital loop filter. The charge pump is coupled to the mixed mode controlled oscillator. The charge pump receives an up/down signal and sends a current signal to the mixed mode controlled oscillator. The digital loop filter receives the up/down signal and generates a digital code signal to the mixed mode controlled oscillator. An output frequency of the mixed mode controlled oscillator is controlled by the current signal and the digital code signal.
Public/Granted literature
- US20130069700A1 CIRCUIT AND METHOD FOR CONTROLLING MIXED MODE CONROLLED OSCILLATOR AND CDR CIRCUIT USING THE SAME Public/Granted day:2013-03-21
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