Segmented resistive digital to analog converter
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United States of America Patent
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Sep 29, 2020
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N/A
app pub date -
Jan 1, 2019
filing date -
Jun 4, 2018
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Abstract
A digital to analog converter (DAC) that receives a binary coded signal and generates an analog output signal includes a binary-to-thermometer decoder and a resistive network. The decoder receives the binary coded signal, and decodes it into thermometer signals. The resistive network has branches that are coupled to an output terminal of the DAC in response to the thermometer signals. Each of the branches includes first and second resistors, and a switch. The first resistor is coupled between a first reference voltage and the switch, and the second resistor is coupled between a second reference voltage and the switch. The switch couples either the first resistor or the second resistor to the output terminal in response to a corresponding thermometer signal.
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