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Ultra Low Signal with High Linearity Differential Amplifier with CMOS 180nm technology

N. K. Kaphungkui*, G.R. Michael**

*-** Department of Electronics and Communication Engineering, Dibrugarh University, Assam.

Periodicity:March - May'2013
DOI : https://doi.org/10.26634/jele.3.3.2253

Abstract

A differential amplifier is an amplifier that amplifies the difference between two voltages and rejects the average or common mode value of the two voltages. The paper presented here is a single input - balanced output cascoded differential amplifier that amplifies a very small signal from the range of nV up to mV with a gain of 46.02db and operating with a constant gain up to 3MHz bandwidth. This work mainly aims at the amplification of very small input voltage and reduction of overall circuit power dissipation maintaining its linearity. Its application is for lower frequency and very small signal amplification. The total circuit power dissipation is only 32.3uW which is appreciable low. The circuit gain is 200 and it is operated with only 1V. The allowable input peak voltage is from 1nV up to 0.7mV and the output swing without distortion is 280mV peak to peak. For low frequency and low signal amplification this small signal amplifier with low power dissipation can lengthen the lifetime of a chip in IC technology which is powered by battery, if the total power dissipation is low.

Keywords

Tail current, CMRR, Transconductance, Bias voltage, W/L ratio, Balance output, Single Input

How to Cite this Article?

Kaphungkui, N.K., and Michael, G.R. (2013). Ultra Low Signal With High Linearity Differential Amplifier With CMOS 180nm Technology. i-manager’s Journal on Electronics Engineering, 3(3), 12-15. https://doi.org/10.26634/jele.3.3.2253

References

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[2]. Mirjana Banjevic, Niksa Tadic “1.5 V Rail-to-Rail Constant Gm CMOS Differential Amplifier”.

[3]. Phillip E. Allen, Douglas R. Holberg (2002). “CMOS Analog Circuit Design” Oxford University Press, 2002.

[4]. Raj Kumar Tiwari, Ganga Ram Mishra, and Maheshwar Misra, (2009). “A new high performance CMOS differential amplifier” International Journal of Electronic Engineering Research, ISSN 0975- 6450 Volume 1 Number 2 (2009) pp. 147–154.

[5]. Soo-won kim, Randall L. Geiger “Design of a CMOS differential Amplifier using a gate coupled BACKGATE pair”

[6]. P. R. Gray, R. G. Mayer (1982). “MOS Operational Design- A tuitorial Review”. IEEE J. Solid State Circuits, Vol. SC-17, pp. 769-782,1982.

[7]. Amana Yadev (2012). “Design Of Two Stage OP-AMP and Analyze the Effect of Scaling” (IJERA) Vol. 2, Issue 5, September- October 2012, pp.647-654.

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Ultra Low Signal with High Linearity Differential Amplifier with CMOS 180nm technology

Abstract

Keywords

How to Cite this Article?

References

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