Invention Application
WO2017030849A3 FULLY DIFFERENTIAL CHARGE PUMP WITH SWITCHED-CAPACITOR COMMON-MODE FEEDBACK
审中-公开
充分差动电荷泵与开关电容器共模反馈
- Patent Title: FULLY DIFFERENTIAL CHARGE PUMP WITH SWITCHED-CAPACITOR COMMON-MODE FEEDBACK
- Patent Title (中): 充分差动电荷泵与开关电容器共模反馈
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Application No.: PCT/US2016046254Application Date: 2016-08-10
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Publication No.: WO2017030849A3Publication Date: 2017-03-30
- Inventor: YIN WENJING , HINRICHS JEFFREY MARK
- Applicant: QUALCOMM INC
- Assignee: QUALCOMM INC
- Current Assignee: QUALCOMM INC
- Priority: US201514826888 2015-08-14
- Main IPC: H03L7/089
- IPC: H03L7/089 ; H03L7/087
Abstract:
Certain aspects of the present disclosure provide methods and apparatus for implementing a fully differential charge pump circuit that eliminates a source of noise and power consumption by using a low-noise switched-capacitor common-mode feedback (CMFB) circuit, rather than a continuous-time amplifier-based CMFB circuit. The fully differential charge pump circuit presented in this disclosure includes the switched-capacitor CMFB (SC-CMFB) unit connected to differential output nodes of the charge pump and provides a feedback signal to the charge pump to control a common-mode voltage of the differential signals based on a reference common-mode voltage. In certain aspects, a replica phase-frequency detector (PFD), a frequency divider, and a non-overlapping clock generator provides control signals for the SCCMFB circuit.
Information query
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