{"title":"A Novel Interpolation Scheme and Apparatus to Extend DAC Usable Spectrum over Nyquist Frequency","authors":"Wang liguo, Wang zongmin, Kong ying","volume":63,"journal":"International Journal of Electronics and Communication Engineering","pagesStart":310,"pagesEnd":315,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/1379","abstract":"A novel interpolation scheme to extend usable spectrum\nand upconvert in high performance D\/A converters is addressed in this\npaper. By adjusting the pulse width of cycle and the production circuit\nof code, the expansion code is a null code or complementary code that\nis interpolation process. What the times and codes of interpolation\ndecide DAC works in one of a normal mode or multi-mixer mode\nso that convert the input digital data signal into normal signal or a\nmixed analog signal having a mixer frequency that is higher than the\ndata frequency. Simulation results show that the novel scheme and\napparatus most extend the usable frequency spectrum into fifth to\nsixth Nyquist zone beyond conventional DACs.","references":"[1] A. V. den Bosch, M. A. F. Borremans, M. S. J. Steyaert, and W. Sansen,\nA 10-bit 1-GSample\/s Nyquist Current-Steering CMOS D\/A Converter,\nIEEE J. Solid-State Circuits vol. 36, no. 3, 2001, pp. 315-324.\n[2] G. A. M. V. der Plas, J. Vandenbussche, W. Sansen, M. S. J. Steyaert, and\nG. G. E. Gielen,A 14-bit Intrinsic Accuracy Q2 Random Walk CMOS\nDAC, IEEE J. Solid-State Circuits vol. 34, no. 12, 1999, pp. 1708-1718.\n[3] C.-H. Lin, F. M. der Goes, J. R. Westra, J. Mulder, Y. Lin, E. Arslan,\nE. Ayranci, X. dong Liu, and K. Bult,A 12 bit 2.9GS\/s DAC With IM3-\n60dBc Beyond 1 GHz in 65nm CMOS, IEEE J. Solid-State Circuits vol.\n44, no. 12, 2009, pp. 3285-3293.\n[4] D. A. Mercer,LOW POWER APPROACHES TO HIGH SPEED CMOS\nCURRENT STEERING DACS, IEEE Custom Intergrated Circuits Conference\n2006, pp. 153-160.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 63, 2012"}