SQUELCH DETECTOR
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United States of America Patent
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Issued Date -
Sep 12, 2024
app pub date -
Nov 29, 2023
filing date -
Mar 7, 2023
priority date (Note) -
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Abstract
A squelch detector is disclosed by the present application. By configuring the first to third bias current sources and a mirror ratio of the current mirror circuit, when an amplitude difference between first and second input signals is smaller or greater than a squelch threshold, flip of an output node in the squelch detector depends only on the squelch threshold and is independent of variations of process, voltage and temperature (PVT) parameters. Thus, the squelch detector can always provide reliable amplitude detection of input signals despite of possible variations of the PVT parameters.
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