Digital Inputs D15..D0 (from 16-bit latch) │ ┌────┴────┐ │ R-2R │ │ Ladder │──► Analog Summing Node └────┬────┘ │ [Op-Amp I-to-V]──► Output (Sine Wave) │ GND
Here's a general essay based on the assumption that "Waves 16 R2R" pertains to a version of audio processing software: waves 16 r2r