| 摘要 |
A drive circuit 270 having a differential amplifier 271, a current controller 272 formed from an n-channel MOSFET, and a drive ability control circuit sets its output drive ability in a high state only in a signal read, and otherwise sets the output drive ability in a low state to reduce power consumption. Thus, a solid-state image sensing device which can perform a high-speed read while ensuring low power consumption and wide dynamic range can be implemented. As the drive ability control circuit, for example, a current source 273 formed from an n-channel MOSFET and voltage switching by a drive change-over switch 274 can be used. |
