| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform wide-range and high-accuracy delay adjustment which is resistant to a variation in delay caused by a PVT variation. <P>SOLUTION: A semiconductor integrated circuit includes: a first DLL 101 for outputting a first control current I1; a second DLL 102 for outputting a second control current I2; a plurality of first variable delay elements 104 controlled by the first control current; a selector 106 for changing the number of stages of the plurality of the first variable delay elements, based on a control signal SEL; a current complementing circuit 103 for outputting a third control current I3 for complementing a value of the first control current and a value of the second control current based on the control signal SEL; and a plurality of second variable delay elements 105 controlled by the third control current I3. <P>COPYRIGHT: (C)2011,JPO&INPIT |
