| 摘要 |
In a source follower circuit having an NMOS source follower transistor with a drain thereof connected to a power supply and a current supply connected across the source of this transistor and earth, one end of a capacitor is connected to the gate of the transistor, the first analog switch is connected across the gate of the transistor and a precharge supply, the second analog switch is connected across the other end of the capacitor and the source of the transistor, and the third analog switch is connected across the other end of the capacitor and a signal source.
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