Patent ID: 6414496
Filing Date: 2002-07-02
Classification: G01R

Abstract:
A comparator system for comparing a device-under-test (DUT) signal Sdut to a reference signal Sref and compensating for signal distortion that is imposed by a transmission path over which said DUT signal Sdut is received, the system comprising:a comparator that generates a comparator signal Scomp in response to a difference between a signal at a first comparator input port and said DUT signal Sdut at a second comparator input port; an impedance member that couples said reference signal Sref to said first comparator input port; a current generator that generates a distortion current in response to said DUT signal Sdut; and a capacitor that couples said distortion current to said first comparator input port; said distortion current reacting with said capacitor and said impedance member to modify said reference signal Sref into a compensated reference signal Scmp-ref at said first comparator input port that substantially tracks said signal distortion.