Voltage Mode Universal Filter Using Current Differencing Buffered Amplifier as an Active Device

Abstract

Integrated filter circuit design resulted in desire for replacement of Inductors by active elements like Operational Amplifiers which led to the introduction of active filters. Active filter design has evolved over a period of time. Starting with OP AMPs, we have witnessed phenomenal growth of active component usage in filter design and development catering to varying requirements. This has contributed greatly in emergence of circuits with minimal limitations and advantages in terms of wide Bandwidth and High slew rates. Current Differencing Buffered Amplifier (CDBA) based active filter design has resulted in introduction of many novel circuits .This paper proposes a new Voltage-mode three input and Single output (TISO) multifunction filter based on single CDBA, four resistors and two capacitors. This second order filter circuit is capable of realizing various filter functions by choosing values of the three inputs variably. The natural frequency (ω0) can be tuned with passive components and the Q of the circuit is independent of (ω0) .The higher cascading capability of the circuit is ensured because of its low - output impedance. Further PSPICE-simulated results are in conformity with theoretical values.

Share and Cite:

S. Bashir and N. Shah, "Voltage Mode Universal Filter Using Current Differencing Buffered Amplifier as an Active Device," Circuits and Systems, Vol. 3 No. 3, 2012, pp. 278-281. doi: 10.4236/cs.2012.33038.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] C. Acar and S. O¨ Zogˇuz, “A New Versatile Building Block: Current Differencing Buffered Amplifier Suitable for Analog Signal Processing Filters,” Microelectronics Journal, Vol. 30, No. 2, 1999, pp. 157-160. doi:10.1016/S0026-2692(98)00102-5
[2] A. U. Keskin, “Voltage-Mode High-Q Band-Pass Filters and Oscillators Employing Single CDBA and Minimum Number of Components,” International Journal of Electronics, Vol. 92, No. 8, 2005, pp. 479-487. doi:10.1080/00207210500168626
[3] S. O¨zogˇuz, A. Toker and C. Acar, “Current-Mode Continuous Time Fully-Integrated Universal Filter Using CDBAs,” Electronics Letters, Vol. 35, No. 2, 1999, pp. 97-98. doi:10.1049/el:19990118
[4] W. Tangsrirat and W. Surakampontorn, “Realization of Multiple-Output Biquadratic Filters Using Current Differencing Buffered Amplifiers,” International Journal of Electronics, Vol. 92, No. 6, 2005, pp. 313-325. doi:10.1080/00207210500141862
[5] W. Tangsrirat, “Voltage-Mode Multifunction Biquadratic Filter and Sinusoidal Oscillator Using Only Two CDBAs,” Journal of Active and Passive Electronic Devices, Vol. 4, No. 4, 2009, pp. 335-345.
[6] H. Sedef and C. Acar, “On the Realization of VoltageMode Filters Using CDBA,” Frequenz, Vol. 54, No. 9-10, 2000, pp. 198-202. doi:10.1515/FREQ.2000.54.9-10.198
[7] K. N. Salama and A. M. Soliman, “Voltage Mode Kerwin-Huelsman-Newcomb Circuit Using CDBAs,” Frequenz, Vol. 54, No. 7-8, 2000, pp. 90-93.
[8] S. Maheshwari and I. A. Khan, “Novel Voltage-Mode Universal Filter Using Only Two CDBAs,” Journal of Circuits, Systems and Computers, Vol. 14, No. 1, 2005, pp. 159-164. doi:10.1142/S0218126605002118
[9] S. Ozoguz, A. Toker and C. Acar, “Current-Mode Continuous-Time Fully Integrated Universal Filter Using CDBAs,” Electronics Letters, Vol. 35, No. 2, 1999, pp. 97-98. doi:10.1049/el:19990118
[10] A. U. Keskin and E. Hancioglu, “Current Mode Multifunction Filter Using Two CDBAs,” International Journal of Electronics & Communications, Vol. 59, No. 8, 2005, pp. 495-498.
[11] Anonymity, “Analog Devices Linear Products Data Book,” Analog Devices, Norwood, 1990.
[12] W. S. Hassanein, I. A. Awad and A. M. Soliman, “New Wide Band Low Power CMOS Current Conveyors,” Analog Integrated Circuits Signal Process, Vol. 40, No. 1, 2004, pp. 91-97. doi:10.1023/B:ALOG.0000031439.62496.f9

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.