Piecewise Linear Digital-to-Analog Converter Circuit
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United States of America
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Dec 26, 2024
app pub date -
Jun 21, 2023
filing date -
Jun 21, 2023
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Abstract
A piecewise linear current-mode digital-to-analog converter circuit approximates an exponential output current over a range of input codes by generating linearly varying currents with different slopes of different ranges of the input codes. The piecewise linear current-mode digital-to-analog converter circuit includes a current generator circuit that generates the output current based on a reference voltage and a feedback signal. A variable resistance circuit is used to generate the feedback signal using the output current. Respective values of the reference voltage and the variable resistance circuit vary as a function of the input code.
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