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A Modified CMOS Balanced Output Transconductor with Extended Linearity

Published: 01 September 2003 Publication History

Abstract

A new CMOS balanced output transconductor is presented. The circuit is based on applying the dynamic biasing technique on the floating current source to extend its linearity range. The difference in the biasing currents is compensated to maintain the two output currents balanced by subtracting it at the output nodes. The proposed transconductor is suitable for high frequency applications requiring a wide dynamic range. Rail-to-rail operation is achieved with THD of −33.64 dB. The bandwidth achieved by the transconductor is 240 MHz, and the supply voltage used is ±1.5 V.

References

[1]
1. E. Seevinck and R.F. Wassenaar, "A versatile CMOS linear transconductor/squaring-law function circuit." IEEE J. Solid-State Circuits, vol. 22, pp. 360-377, 1987.
[2]
2. J.A. De Lima and C. Dualibe, "A linearly tunable low-voltage CMOS transconductor with improved common-mode stability and its applications to Gm-C filters." IEEE Trans. Circuits Syst.-II, vol. 48, no. 7, pp. 649-660, 2001.
[3]
3. A. Nedungadi and T.R. Viswanathan, "Design of linear CMOS transconductance elements." IEEE Trans. Circuits Syst., vol. 3, pp. 891-894, Oct. 1984.
[4]
4. H. Khorramabadi, "High frequency CMOS continuous time filter." Ph.D. dissertation, Univ. California, Berkeley, 1985.
[5]
5. A. Ismail, "Novel low power analog CMOS circuits suitable for baseband section of direct conversion receivers." Master Thesis, Cairo Univ., 2000.
[6]
6. F. Krummenacher and N. Joehl, "A 4-MHz CMOS continuous-time filter with on-chip automatic tuning." IEEE J. Solid-State Circuits, vol. 23, pp. 750-758, 1988.
[7]
7. S.A. Mahmoud and A.M. Soliman, "A CMOS programmable balanced output transconductor for analogue signal processing" Int. J. Electronics, vol. 82, no. 6, pp. 605-620, 1997.
[8]
8. A.M. Ismail and A.M. Soliman, "Novel CMOS linearized balanced output transconductor amplifier based on differential pairs." Frequenz, vol. 53, pp. 170-174, 1999.
[9]
9. A.F. Arbel and L. Goldminz, "Output stage for current-mode feedback amplifiers, theory and applications." Analog Integrated Circuits and Signal Processing, vol. 2, pp. 243-255, 1992.
[10]
10. M.G. Degrauwe, J. Rijmenants, E.A. Vittoz, and H.J. De Man, "Adaptive biasing CMOS amplifiers." IEEE J. Solid-State Circuits , vol. 17, no. 3, pp. 522-528, 1982.
[11]
11. K. Kuo and A. Leuciuc, "A linear MOS transconductor using source degeneration and adaptive biasing." IEEE Trans. Circuits Syst. II, vol. 48, no. 10, pp. 937-943, 2001.
[12]
12. M.A. Youssef, "Novel analog CMOS current-mode building blocks for filtering and VGA applications." Master Thesis, Cairo Univ., Aug. 2002.

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Published In

cover image Analog Integrated Circuits and Signal Processing
Analog Integrated Circuits and Signal Processing  Volume 36, Issue 3
September 2003
82 pages

Publisher

Kluwer Academic Publishers

United States

Publication History

Published: 01 September 2003

Author Tags

  1. dynamic biasing technique
  2. floating current source
  3. linearization
  4. rail-to-rail
  5. transconductor
  6. voltage-to-current transformation

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