Low-cost DAC provides digital three-phase-waveform synthesis

For applications requiring 16-bit or higher-resolution, three-phase-signal synthesis, DDS involves the use of a microprocessor or a DSP to interface multiple digital-to-analogue converters (DACs). This approach uses not only a lot of devices, but also supporting components and board space. Although one device can have multiple-output serial-controlled DACs with four, eight, 32, or more channels, the DACs provide few bits at the expense of the number of channels.