The removal of the parasitic effects is an emerging Issue in the implementa
tion of the IEEE standard 1149.4 analog test buses. For this, this paper de
fines the intrinsic response and derives an extraction algorithm. The intri
nsic response is defined as the response of the circuit being tested by an
ideal input signal without the parasitic effect. A deconvolution process is
proposed to extract the intrinsic response from the response contaminated
by the parasitic effects. The test results using SPICE simulation data show
that the intrinsic responses remain the same regardless of the differences
in the parasitic effects and the variations in the test signals. The propo
sed methodology is further tested in the real measurement using the MNABST-
1 test chip designed by Matsushita/Panasonic and provided by 1149.4 Working
Group, The test results show that the intrinsic response has an improvemen
t of 15.4 dB in signal-to-noise ratio as compared to the direct measurement
. It also extends the test frequency range by an order of magnitude. Both t
ests reassert that the intrinsic response is independent of parasitic effec
ts and input signal variation. They also show that the proposed extraction
algorithm is robust enough to handle not only the parasitic effects but als
o the noise in the real measurement environment.