Patent ID: 7187163
Filing Date: 2007-03-06
Classification: G01R

Abstract:
1. A parametric measuring circuit for minimizing an oscillation effect, used to measure characteristics of plural input and output terminals of an integrated circuit, the parametric measuring circuit comprising: an input detection circuit, coupled to the input terminals and receiving input signals therefrom to output a detection signal; and an output selection circuit, coupled between an internal circuit and the output terminals of the integrated circuit, and coupled to the input detection circuit, selecting and transmitting either the output signal from the internal circuit or the detection signal to the output terminals according to the control signal; and a control circuit, outputting a plurality of control signals under a measuring mode according to an oscillation effect, wherein some of the control signals are adapted for enabling the output terminals, and the other control signals are adapted for disabling the output terminals; wherein under a normal operational mode, the output selection circuit selects and transmits the output signal from the internal circuit to the corresponding output terminals according to the control signals, and under a measuring mode, the output selection circuit selects and transmits the detection signal to some of the output terminals according to the control signals.