https://hackaday.com/tag/r-2r/
R-2r | Hackaday
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https://www.mathworks.com/help/msblks/ref/binaryweighteddac.html
Binary Weighted DAC - N-bit DAC based on R-2R weighted resistor architecture - Simulink
The R-2R DAC is one of the most common types of Binary-Weighted DACs.
based on