Design and Implementation of An 11-bit Non-linear Interpolation DAC

摘要

In this paper a novel design of an 11 Bit digital-to-analog converter (DAC) is introduced. The design is to be integrated in a Direct Digital Frequency Synthesizer (DDFS). The designing of a DAC is critical due to its poor performance and low speed. The proposed design consists of three modules, a linear DAC, a nonlinear DAC and a nonlinear interpolation DAC. Each module contributes in enhancing the DAC performance. The DAC is integrated and simulated using Mentor Graphic Tools. The simulation was done using a 3.3V, 0.35u CMOS technology. The layout of the proposed DAC will be available by the conference time.