{"title":"3.5-bit Stage of the CMOS Pipeline ADC","authors":"Gao Wei, Xu Minglu, Xu Yan, Zhang Xiaotong, Wang Xinghua","volume":67,"journal":"International Journal of Electronics and Communication Engineering","pagesStart":612,"pagesEnd":616,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/9449","abstract":"
A 3.5-bit stage of the CMOS pipelined ADC is proposed. In this report, the main part of 3.5-bit stage ADC is introduced. How the MDAC, comparator and encoder worked and designed are shown in details. Besides, an OTA which is used in fully differential pipelined ADC was described. Using gain-boost architecture with differential amplifier, this OTA achieve high-gain and high-speed. This design was using CMOS 0.18um process and simulation in Cadence. The result of the simulation shows that the OTA has a gain up to 80dB, the unity gain bandwidth of about 1.138GHz with 2pF load.<\/p>\r\n","references":"[1] P. R.Gray, R.G Meyer. Analysis and Design of Analog Integrated\r\nCircuits,2nd Edition New York: Wiley,1982\r\n[2] Waltari M E, Halonen K A I. Circuit techniques for low-voltage and high\r\nspeed A\/D converters (M). Dordrecht, Netherlands, Kluwer Academic\r\nPublisher, 2002\r\n[3] Y. Yoshii, K. Asano, M. Nakamura, et al. An 8b 100MSPS Flash ADC.\r\nISSCC Dig. Tech. Papers, San Francisco, CA: IEEE Solid-State Circuits\r\nSociety, 1984, 58-59\r\n[4] Liu Chang-Wei. A loop charge method for the Z-domain analysis of\r\nswitched-capacitor networks. Journal of electronics & information\r\ntechnology, 1994, 16(1) : 96-101\r\n[5] Byung-Moo Min, Peter Kim, Frederick W. Bowman, David M. Boisvert and\r\nAelo J.Aude. A 69mW 10bit 80MSPS Pipelined CMOS ADC(J). IEEE J.\r\nSolide-State Circuits, 2003,38(12):2031-2039.\r\n[6] Hernes B, Briskemyr A., et al. A 1.2V 220MSPS 10bit pipeline ADC\r\nimplemented in 0.13um digital CMOS(C). IEEE International on\r\nSolid-State Circuits Conference, 2004, vol.1, PP:256-262.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 67, 2012"}