| 摘要 |
PROBLEM TO BE SOLVED: To provide an AD conversion circuit and a solid state imaging device that keep AD conversion accuracy intact.SOLUTION: Latch circuits D_0-D_6 are disabled until a first timing when an output signal CO of a comparison section 11 is inverted, and are enabled until a second timing when a delay time of an inverting delay circuit DLY elapses from the first timing. A latch circuit D_7 is enabled until the second timing from a timing related to a start of comparison in the comparison section 11. The latch circuits D_0-D_7 latch output signals CK0-CK7 of delay units DU[0]-DU[7] at the second timing. A determination section 102 determines whether or not the latch circuits D_0-D_7 have accurately latched the output signals CK0-CK7 of the delay units DU[0]-DU[7], and outputs a signal indicating the result of determination to a delay control section 103. The delay control section 103 controls the delay time of the inverting delay circuit DLY on the basis of the result of determination. |
