Abstract
In vast majority of operational amplifiers, output transistor current is not independently accessible. Op-Amp power supply current sensing is a simple technique for detecting output transistor current from the Op-Amp power supply leads. This technique was first introduced in 1979 to implement voltage controlled current sources and current controlled current sources [1]. It has been implemented by connecting current mirrors to Op-Amp supply leads and makes possible to gain access to output transistor current separately.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Haslett J. W., Rao M K N (1979) A high quality controlled current source. IEEE Transactions Instrumentation Measurement, 28(2):132–140.
Nordholt E. H.(1982) Extending Opamp capabilities by using power-supply. IEEE Transactions on Circuits and Systems, 29(6):411–414.
Toumazou C., Lidgey F. J. (1985) Floating-impedance convertors using current conveyors. Electronic Letters, 21(15):64–642.
Toumazou C., Lidgey F. G. (1986) Universal active filter using current conveyors. Electronics Letters, 22(12): 662–664.
Toumazou C., Lidgey F. G. (1987) Wide-band precision rectification. IEE Proceedings 134(1), DOI: https://doi.org/10.1049/ip-g-1.1987.0002.
Wilson B., Lidgey F. G., Toumazou C. (1988) Current activated analogue signal processing circuits. Proc. IEEE International symposium on circuits and systems, June 1988.
Wilson B. (1985), Floating FDNR employing a new CCII-conveyor implementation. Electronic Letters, 21:996–997.
Sharif-Bakhtiar M., Aronhime P. (1978) A current conveyor realization using operational amplifiers, International Journal of Electronics, 45: 283–288.
Annema A. J., Nauta B., Langevelde R.V., Tuinhout H. (2005) Analog circuits in ultra-deep-submicron CMOS. IEEE Journal of Solid State Circuits, 40:132–143.
Fayomi C. J. B., Sawan M., Roberts G.W. (2004) Reliable circuit techniques for low-voltage analog design in deep submicron standard CMOS: a tutorial. Analog Integrated Circuits and Signal Processing, 39:21–38.
Su W. J., Lidgey F. J., Porta S., Zhu Q. S. (1994) Analysis of IC op-amp power-supply current sensing. IEEE International Symposium on Circuits and Systems, 1994.
Lidgey F. J., Su W. J.(1994) Improvements to op-amp power-supply current sensing technique. Electronic Letters, 30(19):1567–1568.
Toumazou C., Lidgey F. J. (1989) Novel current-mode instrumentation amplifier. Electronic Letters, 25(3):228–230.
Douglas E. L. et al. (2004) A Low-voltage current-mode instrumentation amplifier designed in a 0.18-micron CMOS technology. Proceedings of Canadian Conference on Electrical and Computer Engineering, 2004.
Harb A., Sawan M. (1999) New low-power low-voltage high-CMRR CMOS instrumentation amplifier.Proceedings of IEEE International Symposium on Circuits and Systems, 1999.
Prior C. A., Vieira F. C. B., Rodrigues C. R. (2006), Instrumentation amplifier using robust rail-to-rail operational amplifiers with gm control. Proceedings of IEEE Int. Midwest Symposium on Circuits and Systems, 2006.
Li J. T., Pun S. H., Mak P. U., Vai M. I. (2008) Analysis of op-amp power-supply current sensing current-mode instrumentation amplifier for biosignal acquisition system. 30th Annual International IEEE EMBS Conference, 2008.
Zhu Q. S., Lidgey F. J., Hunt M. A. V.(1992) Improved wide-band, high CMRR instrumentation amplifier. Clin. Phys. Physiol. Phys. Meas., 13(Suppl. A):51–55.
Zhu Q. S., Lidgey E J., Su W. J.(1993) High CMRR, second generation current-mode instrumentation amplifiers. Proceedings of IEEE Int. Symposium on Circuits and Systems, 1993.
Azhari S. J., Fazlalipoor H. (2009) CMRR in voltage-op-amp-based current-mode instrumentation amplifiers (CMIA). IEEE Transaction on Instrumentation and Measurement, 58(3):563–569.
Su W. J., Lidgey F. J. (1995) Common-mode rejection ratio in current-mode instrumentation amplifiers.Analog Integrated Circuits Signal Processing, 7(3):257–260.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Switzerland AG
About this chapter
Cite this chapter
Safari, L., Ferri, G., Minaei, S., Stornelli, V. (2019). CMIA Based on Op-Amp Power Supply Current Sensing Technique. In: Current-Mode Instrumentation Amplifiers . Analog Circuits and Signal Processing. Springer, Cham. https://doi.org/10.1007/978-3-030-01343-1_2
Download citation
DOI: https://doi.org/10.1007/978-3-030-01343-1_2
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-01342-4
Online ISBN: 978-3-030-01343-1
eBook Packages: EngineeringEngineering (R0)