This paper presents two prototypes of low power low voltage current mode 9 bit pipelined a\/d converters. The first and the second converters are configured of 1.5 bit and 2.5 bit stages, respectively. The a\/d converter structures are composed of current mode building blocks and final comparator block which converts the analog current signal into digital voltage signal. All building blocks have been designed in CMOS AMS 0.35μm technology, then simulated to verify proposed concept. The performances of both converters are compared to performances of known current mode and voltage mode switched capacitance converter structures. Low power consumption and small chip area are advantages of the proposed converters.<\/p>\r\n","references":"[1] O. A. Horna, \"A 150 Mbps A\/D and D\/A Conversion System\", Comsat\r\nTechnical Review, vol. 2, No. 1, pp. 52-57, 1972.\r\n[2] R.A. Ju, D.H. Lee and S.D. Yu, High-Speed low Power CMOS\r\nPipelined Analog-to Digital Converter, IEICE Trans. Fundamentals, vol.\r\nE82-A, No. 6, 1999.\r\n[3] C. S. G. Conroy, D. W. Cline and P. R. Gray. \"An 8-b 85 MS\/s parallel\r\npipeline converter in 1-\u256c\u255dm CMOS\", IEEE J. of Solid-State Circuits,\r\nvol.28., no. 4, 1993.\r\n[4] K. Wawryn, R. Suszy\u0144ski and B. Strzeszewski, \"Low power current\r\nmode pipelined A\/D converter \", in proc. 52nd IEEE International\r\nMidwest Symposium on Circuit and Systems, Cancun, Mexico, 2009.\r\n[5] K. Wawryn, R. Suszy\u0144ski and B. Strzeszewski, \"Low Power Current\r\nMode Pipelined A\/D Converter with 2.5-bit\/stage and Digital\r\nCorrection\", in proc. 12th International Symposium on Integrated\r\nCircuits (ISIC-09), Singapore, 2009.\r\n[6] B. E. Jonsson, H. Tenhunen, \"A 3V wideband CMOS switched-current\r\nA\/D-converter suitable for time-interleaved operation\", Kluwer\r\nAcademic Publishers, vol. 23, pp. 127-139, 2000.\r\n[7] J. Li, F. Maloberti, \"Pipeline of successive approximation converters\r\nwith optimum power merit factor\", Analog Integrated Circuits and\r\nSignal Processing, vol. 45, pp. 211-217, 2005.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 41, 2010"}