抄録
The differential amplifier circuit is one of the most important basic circuit used in analog integrated circuit. ln designing this circuit integrated as an LSI, we have conducted a parameter design using a dynamic characteristic. The ideal function of this circuit is to generate the output voltage equal to the input voltage. ln order to achieve its robust function, it is essential to take LSI manufac turing variability noise factors into consideration. We have found the conventional method where circuit elements were simulated at 3-1evels(min./mean/max.)to determine the optimum design,cannot reduce variability of output voltage effectively. At this time, we selected circuit parameters that may influence the characteristic and assigned them to an L18 orthogonal array and conducted a parameter design by varying LSI manufacturing noise factors. Circuit simulator was used to run the experiments. As a result we have confirmed that we can achieve our objective.
