A Current-mode Based Field-programmable Analog Array For Signal Processing Applications

This paper presents a new approach to develop Field Programmable Analog Arrays (FPAAs), 1 which avoids excessive number of programming elements in the signal path, thus enhancing the performance. The paper also introduces a novel FPAA architecture, devoid of the conventional switching and connection modules. The proposed FPAA is based on simple current mode sub-circuits. An uncompounded methodology has been employed for the programming of the Configurable Analog Cell (CAC). Current mode approach has enabled the operation of the FPAA presented here, over almost three decades of frequency range. We have demonstrated the feasibility of the FPAA by implementing some signal processing functions.171-2125142Lee, E.K.F., Gulak, P.G., Field Programmable Analogue Array Based on MOSFET Transconductances (1992) Electronics Letters, pp. 28-29. , JanuaryKutuk, H., Kang, S., A Field-Programmable Analog Array (FPAA) Using Switched- Capacitor Techniques (1996) Proc. of International Symposium on Circuits and Systems, 4, pp. 41-44. , MayLee, E.K.F., Gulak, P.G., A transconductor-Based Field-Programmable Analog Array (1995) 1995 IEEE International Solid-State Circuits Conference, 38, pp. 198-199. , FebruaryLee, E.K.F., Gulak, P.G., A CMOS Field- Programmable Analog Array (1991) IEEE J.S.S.C., 26 (12), pp. 1860-1867. , DecemberPierzchala, E., Perkowski, M.A., Van Halen, P., Schaumann, R., Current-Mode Amplifier/Integrator for a Field-Programmable Analog Array (1995) 1995 IEEE International Solid-State Circuits Conference, 38, pp. 196-197. , FebruaryPierzchala, E., Perkowski, M.A., High Speed Field-Programmable Analog Array Architecture Design (1994) FPGA'94, , Berkeley, Calif., February 13-15Pierzchala, E., Perkowski, M.A., Grygiel, S., A Field-Programmable Analog Array for Continuous, Fuzzy, and Multi-Valued Logic Applications (1994) ISMVL'94, pp. 148-155. , Boston, Mass., May 25-27Zele, R., Allstot, D., Low-Power CMOS Continuous-Time Filters (1996) IEEE J.S.S.C., 31 (2), pp. 157-168. , FebruarySmith, S.L., Sánchez-Sinencio, E., Low Voltage Integrators for High-Frequency CMOS Filters Using Current Mode Techniques (1996) IEEE Trans. on Circuits and Systems II, 43 (1), pp. 39-48. , JanuaryKhorramabadi, H., Gray, P.R., High-Frequency CMOS Continuous-Time Filters (1984) IEEE J.S.S.C., SC-19 (6), pp. 939-948. , De