Patent ID: 6486710
Filing Date: 2002-11-26
Classification: H03G,H03K,H04L

Abstract:
An apparatus comprising:a first comparator coupled to receive a differential input signal, said first comparator to have parallel branches of active components in which pair of input lines for the differential input signal are separately coupled to first and second branches respectively, but both pair of input lines are coupled to third and fourth branches; a second comparator coupled to receive a differential reference signal, said second comparator to have parallel branches of active components in which pair of reference lines for the differential reference signal are separately coupled to fifth and sixth branches respectively, but both pair of reference lines are coupled to seventh and eighth branches, said first and second comparators coupled to provide an output in which the output is in a first state if a differential magnitude between the two input lines of the differential input signal is below a reference magnitude established by the differential reference signal, but the output is in a second state if the differential magnitude between the two input lines of the differential input signal is above the reference magnitude, said two comparators arranged to provide the comparison and output in a single stage.