Analog digital cascade converter
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United States of America Patent
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-
Sep 4, 1990
Grant Date -
N/A
app pub date -
Nov 9, 1988
filing date -
Nov 10, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an analog-digital converter working at microwave frequencies, the input signal is addressed in parallel to bit levels which are in cascade with one another. Each bit level has a transducer which converts the voltage into a current, and compares this current with a calibrated source. The resultant current is addressed to a logic circuit, the output of which delivers a bit. An intermediate output of the logic circuit constitutes a control signal which regulates the currents of the analog comparators of the less significant bit levels. The calibrated currents are in geometrical progression.
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