Skip to main content
SpringerLink
Log in

Performance comparison of high-order IFLF and LF linear phase lowpass OTA-C filters with and without gain boost

  • Published:
Analog Integrated Circuits and Signal Processing Aims and scope Submit manuscript

Abstract

Design and performance comparison of high-order operational transconductance amplifier and capacitor (OTA-C) filters using leapfrog (LF) and inverse-follow-the-leader-feedback (IFLF) structures are investigated. The filters are designed for a 125 MHz seventh-order equiripple group delay lowpass characteristic with and without gain boost and simulated in 0.25 μm 2-V CMOS. A fully differential highly linear OTA with cross-coupled input pairs and regulated cascode output is used for the simulation. Simulated results show that while the IFLF OTA-C filter can achieve a higher gain boost, the LF OTA-C filter has better other performances.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14

Similar content being viewed by others

References

  1. Sun, Y., & Fidler, J. K. (1993). OTA-C realization of general high-order transfer functions. Electronics Letters, 29(12), 1057–1058.

    Article  Google Scholar 

  2. Sun, Y., & Fidler, J. K. (1996). Synthesis and performance analysis of universal minimum component integrator-based IFLF OTA-grounded capacitor filter. IEE Proceedings Circuits Devices and Systems, 143(2), 107–114.

    Article  MATH  Google Scholar 

  3. Sun, Y., & Fidler, J. K. (1997). Structure generation and design of multiple loop feedback OTA-grounded capacitor filters. IEEE Transactions on Circuits and Systems I, 44(1), 1–11.

    Google Scholar 

  4. Sun, Y., & Fidler, J. K. (1998). Fully-balanced structures of continuous-time MLF OTA-C filters. Proceedings of IEEE International Conference on Electronics, Circuits and Systems, 1, 157–160. Portugal.

    Google Scholar 

  5. Sun, Y., & Fidler, J. K. (1996). Current-mode OTA-C realisation of arbitrary filter characteristics. Electronics Letters, 32(13), 1181–1182.

    Article  Google Scholar 

  6. Sun, Y., & Fidler, J. K. (1997). Current-mode multiple-loop feedback filters using dual-output OTAs and grounded capacitors. International Journal of Circuit Theory and Applications, 25, 69–80.

    Article  MATH  Google Scholar 

  7. Sun, Y. & Fidler, J. K. (1999). General current-mode MLF MO-OTA-C filters. In Proceedings of European Conference on Circuit Theory Design Stresa, Italy.

  8. Sun, Y. (2006). Synthesis of leap-frog multiple loop feedback OTA-C filters. IEEE Transactions on Circuits and Systems, 53(9), 961–965.

    Article  Google Scholar 

  9. Sun, Y., Zhu, X., & Moritz, J. (2008). Explicit design formulas for current-mode leapfrog OTA-C filters and 300 MHz CMOS linear phase filter. International Journal of Circuit Theory and Application (published on line).

  10. Sirinamaratana, P., & Wongkomet, N. (2003). A 0.7-μm CMOS anti-aliasing filter for non-oversampled video signal applications. In Proceedings of IEEE ISCAS Thailand.

  11. Elmala, M., Carlton, B., Bishop, R., & Soumyanath, K. (2005). A highly linear filter and VGA chain with novel DC-offset correction in 90 nm digital CMOS process (pp. 302–303). VLSI Circuit Digest of Technical Papers.

  12. Zhu, X., Sun, Y., & Moritz, J. (2008). Design of current-mode Gm-C MLF elliptic filters for wireless receivers. In IEEE International Conference on Electronics, Circuits, and Systems (ICECS), Malta.

  13. Zhu, X., Zhao, W., Sun, Y., Moritz, J., & Lauder, D. (2008). A widely tunable analogue baseband filter for multistandard receivers. In Proceedings of Analog Signal Processing Symposium, Oxford.

  14. Zhu, X., Moritz, J., & Sun, Y. (2007). Design of a fourth-order continuous-time filter for UWB receivers. In IEEE Norchip, Aalborg, Denmark.

  15. Garrido, N. D. F., Franca, J. E., & Kennedy, J. G. (1997). A comparative study of two adaptive continuous-time filters for decision feedback equalization read channels. IEEE Proceedings ISCAS, 1, 89–92.

    Google Scholar 

  16. Park, J. C., & Carley, L. R. (1998). High-speed CMOS continuous-time complex graphic equalizer for magnetic recording. IEEE Journal of Solid-State Circuits, 33(3), 427–438.

    Article  Google Scholar 

  17. Chiang, D. H., & Schaumann, R. (1996). A CMOS fully-balanced continuous-time IFLF filter design for read/write channels. IEEE Proceedings ISCAS, 1, 167–170.

    Google Scholar 

  18. Chiang, D. H., & Schaumann, R. (1998). Design of a CMOS fully-differential continuous-time tenth-order filter based on IFLF topology. ISCAS, 1, 123–126.

    Google Scholar 

  19. Su, H. W., & Sun, Y. (2002). A CMOS 100 MHz continuous-time seventh-order 0.05° equiripple linear phase leapfrog multiple loop feedback Gm-C filter. IEEE Proceedings of ISCAS, 2, 17–20.

    Google Scholar 

  20. Hasan, M., & Sun, Y. (2005). A 2 V 0.25 μm CMOS 250 MHz fully-differential seventh-order equiripple linear phase LF filter. In IEEE ISCAS, Japan.

  21. Zhu, X., Sun, Y., & Moritz, J. (2008). A CMOS 80mW 400 MHz seventh-order MLF FLF linear phase filter with gain boost. In IEEE international conference on electronics, circuits, and systems (ICECS), Malta.

  22. Zhu, X., Sun, Y., & Moritz, J. (2008). A CMOS 750 MHz fifth-order continuous-time linear phase lowpass filter with gain boost. In IEEE international symposium on circuits and systems (ISCAS) Seattle, USA.

  23. Zhu, X., Sun, Y., & Moritz, J. (2007). A CMOS fifth-order 400 MHz current-mode LF linear phase filter for hard disk read channels. In European conference on circuit theory and design (ECCTD), Sevilla, Spain.

  24. Su, H. W., Sun, Y. & Gordon, R. (2000). Performance analysis and comparison of high-frequency CMOS OTA-C filters. In IEE symposium on analog signal processing, 8/1–8/7, Oxford, UK.

  25. Su, H. W., & Sun, Y. (2000, December 4–6). Performance comparison of continuous-time IFLF and LF low-pass all-pole OTA-C filters. In Proceedings of IEEE Asia Pacific Conference on Circuits and Systems (pp. 271–274). Tianjin, China.

  26. Su, H. W., & Sun, Y. (2005). Performance analysis and comparison of multiple loop feedback OTA-C filters. International Journal of Circuits, Systems and Computers, 14(4), 685–720.

    Article  Google Scholar 

  27. Mezher, K. A., & Bowron, P. (2005). Output noise of generalised high-order allpole OTA-C filters. In Proceedings of IEEE ISCAS, (pp. 3291–3294).

  28. Koziel, S., Schaumann, R., & Xiao, H. (2005). Analysis and optimization of noise in continuous-time OTA-C filters. IEEE Transactions on Circuits and Systems, 52(6), 1086–1094.

    Article  Google Scholar 

  29. Koziel, S. & Szczepanski, S. (2002). Sensitivity comparison of high-order all-pole Gm-C filters in canonical structures. In Proceedings of IEEE ICECS (pp. 161–164).

  30. Koziel, S., Szczepanski, S., & Schaumann, R. (2004). Structure generation and performance comparison of elliptic Gm-C filters. International Journal of Circuit Theory and Applications, 32, 565–589.

    Article  MATH  Google Scholar 

  31. Chiang, D. H., & Schaumann, R. (2000). Performance comparison of high-order IFLF and cascade analogue integrated lowpass filters. IEE Proceedings of Circuits Devices System, 147(1), 19–27.

    Article  Google Scholar 

  32. Sanchez-Sinencio, E., & Silva-Martinez, J. (2000). CMOS transconductance amplifiers, architectures and active filters: A tutorial. IEE Proceedings of Circuits Devices and Systems, 147(1), 3–12.

    Article  Google Scholar 

  33. Zhu, X., & Sun, Y. (2008). New low distortion low voltage operational transconductance amplifier. Electronics Letters, 44(25).

  34. Sun, Y., Hill, C., & Szczepanski, S. (2003). Large dynamic range high frequency fully differential CMOS transconductance amplifier. International Journal of Analog Integrated Circuits and Signal Processing, 34(4), 247–255.

    Article  Google Scholar 

  35. Glinianowicz, J., Jakusz, J., Szczepanski, S., & Sun, Y. (2000). A high-frequency two-input CMOS OTA for continuous-time filter applications. IEE Proceedings: Circuits, Devices and Systems, 147(1), 13–18.

    Article  Google Scholar 

  36. Su, H. W., & Sun, Y. (2006). High frequency linear multiple output CMOS transconductance amplifier for current-mode filters. International Journal of Circuits, Systems and Computers, 15(5), 701–717.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. School of Engineering and Technology, University of Hertfordshire, Hatfield Herts, AL10 9AB, UK

    Masood-ul Hasan & Yichuang Sun

Authors
  1. Masood-ul Hasan
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yichuang Sun
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Yichuang Sun.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Hasan, Mu., Sun, Y. Performance comparison of high-order IFLF and LF linear phase lowpass OTA-C filters with and without gain boost. Analog Integr Circ Sig Process 63, 451–463 (2010). https://doi.org/10.1007/s10470-009-9424-5

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10470-009-9424-5

Keywords

Search

Navigation