Filter Design Using a New Field-Programmable Analog Array (FPAA)
Abstract
We present a voltage mode switched-capacitor Field Programmable Analog Array (FPAA) to be used to implement various filter structures. The FPAA consists of uniform configurable analog blocks (CABs) allowing implementation of different functions. Each CAB consists of two back-to-back connected inverting and non-inverting strays-insensitive switched-capacitor integrators. The interconnection between CABs is implemented by switched and unswitched capacitor networks. The internal structure of CABs and the interconnection between different CABs are configured by user-programmable digital control signals. The functionality of the FPAA is demonstrated through embedding of different types of filters along with simulation results.
Keywords
Clock Frequency Filter Design Control Word Clock Phase Follow Transfer FunctionPreview
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References
- 1.E. K. F. Lee and P. G. Gulak, “A CMOS field-programmable analog array,” IEEE J. Solid-State Circuits, 1pp. 1860–1867, Dec. 1991.CrossRefGoogle Scholar
- 2.E. K. F. Lee and P. G. Gulak, “Field programmable analogue array based on MOSFET transconductances” Electronics Letters,1 pp. 28–29, Jan. 1992.CrossRefGoogle Scholar
- 3.E. Pierzchala and M. A. Perkowski, “High speed field programmable analog array.” FPGA 94, Berkeley, Calif., Feb. 1994.Google Scholar
- 4.R. Gregorian and G. C. Temes, Analog MOS Integrated Circuits For Signal Processing. John Wiley and Sons, 1986.Google Scholar
- 5.D. Allstot, R. Brodersen, and P. Gray, “An electrically programmable analog NMOS second order filter.” 1979 ISSCC Dig. Tech. Pap., 94 pp. 76–88, Feb. 1980.Google Scholar
- 6.K. Martin, “Improved circuits for the realization of switched-capacitor filters.” IEEE Transactions on Circuits and Systems, 94 pp. 237–244, Apr. 1980.CrossRefGoogle Scholar
- 7.P. R. Gray and R. G. Meyer, “MOS operational amplifier design a tutorial overview.” IEEE J. Solid-State Circuits, 94pp. 969–982, Dec. 1982.CrossRefGoogle Scholar
- 8.B. D. Datar and A. S. Sedra, “Exact design of strays-insensitive switched-capacitor ladder filters.” IEEE Transactions on Circuits and Systems, 94 pp. 888–898, Dec. 1983.CrossRefGoogle Scholar