Voltage detector circuit
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United States of America Patent
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-
Sep 1, 1998
Grant Date -
N/A
app pub date -
Apr 30, 1997
filing date -
May 30, 1996
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A voltage detector circuit (10) for detecting voltage levels of a digital data bitstream has an input terminal (20) coupled to receive the digital data bitstream. A first peak detector circuit (40) coupled to the input terminal detects a positive peak voltage, and provides a first peak signal. A first differential amplifier is coupled to the input terminal and further coupled to receive the first peak signal, for providing a first difference signal. A second peak detector circuit is coupled to receive the first difference signal from the first differential amplifier, for detecting a peak voltage in the first difference signal and for providing a second peak signal. The first peak signal indicates the value of logical 1 levels in the bitstream, and the second peak signal indicates the relative value of logical 0 levels in the bitstream with respect to the logical 1 levels.
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