Digitally controlled adaptive slew rate delta modulator
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United States of America Patent
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-
May 4, 1993
Grant Date -
N/A
app pub date -
Aug 21, 1991
filing date -
Aug 21, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A delta modulator automatically adjusting the slewing rate is disclosed. In the absence of a transition in the output data of a delta modulator, the current used for the integrator of the delta modulator is increased. When the comparator of the modulator indicates that the feedback signal of the modulator has overshot the input signal, the current is decreased or reversed until the two signals are approximately equal as signalled by a 50% duty cycle.
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