| 摘要 |
PROBLEM TO BE SOLVED: To improve a gain of an on-chip source-follower amplifier in a solid-state imaging device. SOLUTION: The solid-state imaging device in the present invention includes a source-follower amplifier having a driver transistor and a load circuit connected to the driver transistor. The load circuit is structured by a first MOS transistor having a gate with a fixed potential, and a load device connected to a source of the first MOS transistor. Furthermore, the load circuit of the source-follower amplifier is structured by a plurality of serially connected MOS transistors. Furthermore, by configuring the load circuit with a current mirror circuit, load conductance is reduced. COPYRIGHT: (C)2006,JPO&NCIPI
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