SINE CONSTRUCTION: DDSS form precision oscillators

摘要

Digital-based signal-processing blocks are often architectural-ly reminiscent of their analog forebears, as their underlying mathematics demonstrate. For example, the parallel manipulations of Fourier and Z transforms, which continuous- and discrete-time filter designs exploit, form expressions of like shape and order. Other examples of parallel structures abound. Indeed, nonanalo-gous structures are unusual among basic functions that enjoy both linear and digital implementations. As a result, digital circuits often use numeric representations for the same physical phenomena that analog circuits codify as voltages or currents.