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发明授权
CN101488710B 一种电荷泵电路 失效 - 权利终止

一种电荷泵电路
摘要：
本发明公开了一种电荷泵电路，包括输入高摆幅共源共栅电流镜，输出高摆幅共源共栅电流镜，抑制电荷共享电路，其中输出高摆幅共源共栅电流镜中的上拉输出共源共栅电流镜以及下拉输出共源共栅电流镜与抑制电荷共享电路、上拉开关管、下拉开关管共同组成了上拉以及下拉电路。输出采用共源共栅电流镜结构，增加了输出电流镜的电阻，减小了输出电压的变化对于电流的影响还隔绝了开关管的噪声对于输出电压的影响，同时抑制了电荷共享效应以及耦合效应。
摘要（英）：

The invention discloses a charge pump circuit which comprises an input high swing amplitude cascode current mirror, an output high swing amplitude cascode current mirror and a suppression charge shared circuit, wherein, a pull-up and a pull-down circuits are formed by a pull-up output cascode current mirror and a pull-down output cascode current mirror in the output high swing amplitude cascode current mirror as well as the suppression charge shared circuit, a pull-up switch pipe and a pull-down switch pipe. The cascode current mirror structure is adopted by output, so that the resistance of the output current mirror is increased, the influence of the change of the output voltage on the electric current is reduced, and the noise of a switching tube is avoided affecting the output voltage.Meanwhile, the sharing effect and the coupling effect of the charge can be inhibited.

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