METHOD FOR REUSING DESIGN ASSET OF OPERATIONAL AMPLIFIER, APPARATUS FOR GENERATING LAYOUT, AND PROGRAM FOR GENERATING LAYOUT

摘要

PROBLEM TO BE SOLVED: To provide a method for reusing design assets of an operational amplifier by which existing design assets can be easily recycled and time for reuse can be shortened, and to provide the operational amplifier capable of realizing it, an apparatus for generating layout, and a program for generating layout. SOLUTION: Three kinds of shrinking rates of 1 time, 0.5 times and 0.25 times are prepared, and in correspondence with three kinds of shrinking rates, three kinds of layout information of the operational amplifiers La, Lb, Lc are prepared as a library. In each shrinking rate, bias current is changed by changing bias voltage between an upper limit and a lower limit.