| 摘要 |
PROBLEM TO BE SOLVED: To overcome the problem of a prior art such that the output current of the current source of each arranged cell conventionally becomes inhomogeneous due to various causes in a segmentation mixed signal circuit. SOLUTION: A mixed signal circuit 200, like a DAC, for performing a series of operation cycles is provided with n pieces of circuit segments 21 and 41 to 2n and 4n for co-operating and generating an analog output signal, a control signal generating means 22 for generating one set of n pieces of segment control signals T1 to Tn, and a morphing means 24 for applying the n pieces of segment control signals to the n pieces of segments in at least two kinds of sequences at different times, respectively. As for the sequences, at least one sequence is different from the next sequence by as much as a part that is larger than one start sequence position in a segment, and in the sequence, the change of a segment sequence position, which is brought about by the change of the application sequences of the segment control signals, is limited by the number and/or size which are equivalent to the number (n) of segments.
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