The design problems encountered when implementing switched capacitor filters onto silicon are examined. This includes the practical limitations of capacitor size and matching, amplifier speed and the problems associated with switch charge injection and resistance. Methods of overcoming these problems will be examined so that highly accurate, switched capacitor filters, can be reliably designed.
KeywordsClock Frequency Bottom Plate Switch Resistance Parasitic Capacitance Capacitor Bank
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- “AutoFilter,” Mentor Graphics Corporation, 8005 S. W. Boeckman Road, Wilsonville, OR 97070, USA.Google Scholar
- P. E. Fleischer and K. R. Laker, “A family of Active Switched Capacitor Biquad Building Blocks,” The Bell System Technical Journal, vol. 58, no. 10, pp. 2235–2269.Google Scholar
- R. K. Henderson, Li Ping and J. I. Sewell, “A design program for digital and analogue filters: PANDDA,” Proc. ECCTD (Brighton, UK), pp. 289-293, Sep. 1989.Google Scholar
- “SCAP (Switched Capacitor Analysis Program),” Mentor Graphics Corporation, 8005 S. W. Boeckman Road, Wilsonville, OR 97070, USA.Google Scholar
- S. C. Fang, Y. P. Tsividis and O. Wing, “SWITCAP: A Switched Capacitor Network Analysis Program — Part 1: Basic Features,” IEEE Circuits and Systems Magazine, pp. 4-9, Sep. 1983 (“Part 2: Advanced Features,” pp. 41-46, Dec. 1983).Google Scholar
- R. C. J. Taylor and H. Horvat, “A High Precision, Multi-Notch, Low Pass Switched Capacitor Filter,” Proc. The Fourth Mid-European Conference on Custom/Application Specific Integrated Circuits, Budapest, pp. 53-60, May 1993.Google Scholar
- R. Gregorian and G. C. Temes, “Analog MOS Integrated Circuits for Signal Processing,” Wiley-Interscience, 978-1-4757-2353-3: 0-471-09797-7.Google Scholar
- M. E. Van Valkenburg, “Analog Filter Design,” HRW Series in electrical and computer engineering, 978-1-4757-2353-3: 0-03-059246-1.Google Scholar
- K. R. Laker, P. E. Fleischer and A. Ganesan, “Parasitic insensitive biphase switched capacitor filters realised with one operational amplifier per pole pair,” BSTJ, vol. 61, no. 5, pp. 685–707, 1982.Google Scholar
- M. Powell, J. I. Sewell and R. C. J. Taylor, “On Time-Sharing and Noise Minimisation in Switched-Capacitor Filters,” Proc. Colloquium on ‘Electronic Filters,’ IEE Savoy Place, London, pp. 2/1-2/6, May 1985.Google Scholar