Invention Grant
- Patent Title: Wide dynamic range charge pump
- Patent Title (中): 宽动态范围电荷泵
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Application No.: US12249915Application Date: 2008-10-11
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Publication No.: US07692458B1Publication Date: 2010-04-06
- Inventor: Mehmet Mustafa Eker
- Applicant: Mehmet Mustafa Eker
- Applicant Address: US CA San Diego
- Assignee: Applied Micro Circuits Corporation
- Current Assignee: Applied Micro Circuits Corporation
- Current Assignee Address: US CA San Diego
- Agency: Law Office of Gerald Maliszewski
- Agent Gerald Maliszewski
- Main IPC: H03L7/00
- IPC: H03L7/00 ; H03L7/06

Abstract:
A wide dynamic range charge pump is provided for use in a phase-locked loop (PLL) circuit. The charge pump includes a first, second, and third set of current sources. The charge pump further includes a first capacitor having an input connected to the first set. A first operational amplifier (op amp) has an input connected to the first set output, and an output connected to the second set output and to a voltage controlled oscillator (VCO) input. A first resistor has a first end connected to the first op amp output and a second end connected to the third set. A second capacitor has an input connected to the first resistor second end, and an output connected to the second reference voltage.
Public/Granted literature
- US20100090734A1 WIDE DYNAMIC RANGE CHARGE PUMP Public/Granted day:2010-04-15
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