发明授权
- 专利标题： Switched-capacitor circuits with reduced distortion
- 专利标题（中）： 开关电容电路具有减小的失真
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申请号： US10104125申请日： 2002-03-22
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公开(公告)号： US06617908B1公开(公告)日： 2003-09-09
- 发明人: Axel Thomsen , Sherry Xiao hong Wu , John Laurence Melanson
- 申请人： Axel Thomsen , Sherry Xiao hong Wu , John Laurence Melanson
- 主分类号： G06F764
- IPC分类号： G06F764
摘要：
A switched capacitor circuit 300, including a sampling capacitor 303, switches 301, 304 for charging the sampling capacitor 303 during a charging phase, and switches 302, 305 for transferring charge from the sampling capacitor 303 to a load 313 in the feedback loop of an operational amplifier 312 during a dump phase. Circuitry 701 controls the discharge of sampling capacitor 303 during the dump phase to minimize transients at the input of the operational amplifier 312 and thereby minimize input threshold voltage variation.
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