Patent ID: 6445207
Filing Date: 2002-09-03
Classification: G01R

Abstract:
An IC tester for conducting a frequency analysis of a power supply current fluctuating in response to a test pattern signal input to an IC and testing the IC, said IC tester comprising:a processor to generate address control signals and pattern data signals; circuitry to detect power supply current from the IC in response to the test pattern signal input to the IC; pattern address storage means for storing a start address and an end address based on the address control signals; power supply current storage means for storing only power supply current from the IC that is detected while a pattern specified by the start address and the end address is input to the IC; frequency analysis means for conducting a frequency analysis of the power supply current stored in said power supply current storage means; and said processor to determine whether or not the IC is good based on an analysis result of said frequency analysis means.