PURPOSE: To improve the highest operating frequency without increase in power consumption by adding an induction reactance element in series to a load resistor.

CONSTITUTION: Resistors R1, R2 are connected respectively to an in-chip power supply pattern 10 via a spiral inductor 20. In this case, inductors whose reactance X1, X2 (X=ωL) are used, where ω is an angular frequency and L is an inductance. The inductor has a defect that the inductor has a self-resonance frequency and is not used because the inductor shows a capacitive component in a frequency over the said frequency. In order to solve this problem, short-stub transmission lines X=Z0.tanθ are used as the elements X1, X2, where Z0 is a characteristic impedance of the transmission line and θ is an electric length.