Electronic Circuits and Tutorials
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Electronics Schematics - L
Ladder Network Circuits
DAC and op amp provide variable-control voltage: 12/06/01 EDN-Design
Ideas / Early DACs contained standard R-2R ladder networks, and
produced a negative output voltage. These early DACs, such as the
MAX7837/7847 and the MAX523, require both
positive and negative supply rails to
accommodate their negative output.