High-linearity flash analog to digital converter
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United States of America Patent
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Issued Date -
Nov 7, 2019
app pub date -
May 1, 2019
filing date -
May 2, 2018
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Abstract
An analog-to-digital converter circuit comprises code-shuffling circuitry, a plurality of digital-to-analog converter circuits, a plurality of difference circuits, and a plurality of latch circuits. The code-shuffling circuitry is operable to shuffle a plurality of digital codes among a plurality of its outputs. The plurality of digital-to-analog converter circuits are operable to convert a digital code on the respective one of the outputs to a corresponding one of a plurality of analog reference voltages. The plurality of difference circuits is operable to generate a respective one of a plurality of difference signals corresponding to a difference between an input voltage and a respective one of the plurality of reference voltages. The plurality of latch circuits is operable to latch a respective one of the plurality of difference signals to a corresponding one of a plurality of digital values.
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