| 1. A differential signal comparator for converting difference voltage between complementary input signals into a voltage of
CMOS level, wherein the complementary input signals are input into first and second differential amplifier circuits complementary
to each other, the first differential amplifier circuit outputs first and second currents, the second differential amplifier
circuit outputs third and fourth currents, the first and second currents are output into first and second current amplification
circuits, the third and fourth currents are output into third and fourth current amplification circuits, outputs from the
first to fourth current amplification circuits are input into a current arithmetic operation circuit, the current arithmetic
operation circuit outputs complementary current based on the complementary input signals, the complementary current output
is current-voltage converted, and the converted signal is input into a differential comparator of CMOS level input, and further
converted into a single end CMOS level output.
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