Differential comparator for amplifying small swing signals to a full swing output
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United States of America Patent
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-
Apr 15, 1997
Grant Date -
N/A
app pub date -
Aug 2, 1995
filing date -
Aug 2, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A differential comparator that amplifies small swing signals to full swing signals. The differential comparator comprises a current switch having a pair of inputs coupled to receive a pair of small swing complementary input signals and a pair of complementary outputs that output complementary signals. The complementary signals output by the current switch have a voltage swing that centers about a predetermined voltage in response to the complementary input signals. The differential comparator further comprises first and second inverters coupled to receive the output complementary signals, wherein each inverter has a trip point voltage equal to the predetermined voltage. The first and second inverters output full swing complementary output signals in response to the complementary signals output by the current switch.
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