Device, System and Method For Digital Pulse-Density Modulation
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United States of America Patent
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Issued Date -
Nov 14, 2013
app pub date -
May 10, 2013
filing date -
May 10, 2012
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Abandoned
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Abstract
A novel pulse density modulator is disclosed which includes at least one sigma delta modulator operating at a clock rate selected to provide a pre-selected timing resolution for sampling an input signal. The sigma delta modulator employs a hysteresis element to reduce the average transition rate of the output signal of the sigma delta modulator to reduce switching losses. The novel pulse density modulator can provide at least a two or three level output, as desired.
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