Design and analysis of a two stage operational amplifier for high gain and high bandwidth

Savisha A P Mahalingam, Md. Mamun Ibne Reaz, Labonnah F. Rahman, Wan Mimi Diyana Wan Zaki

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper a design and comparison between a fully differential RC Miller compensated CMOS op-amp and conventional op-amp is presented. High gain enables the circuit to operate efficiently in a closed loop feedback system, whereas high bandwidth makes it suitable for high speed applications. A novel RC Miller compensation technique is used to optimize the parameters of gain and bandwidth for high speed applications are illustrated in this research work. The design is also able to address any fluctuation in supply or dc input voltages and stabilizes the operation by nullifying. The design is implemented on TSMC 0.18 μm CMOS process at 3.3 V as supply voltage under room temperature 27° C. The simulated result shows that a unity gain bandwidth of 136.8 MHz with a high gain of 92.27 dB is achieved for the proposed op-amp circuit. The total areas of the layouts are 0.000158 mm 2 and 0.000532 mm 2 for conventional and proposed respectively.

Original languageEnglish
Pages (from-to)247-254
Number of pages8
JournalAustralian Journal of Basic and Applied Sciences
Volume6
Issue number7
Publication statusPublished - Jul 2012

Fingerprint

Operational amplifiers
Bandwidth
Networks (circuits)
Electric potential
Feedback
Temperature

Keywords

  • Fully differential
  • High bandwidth
  • High gain
  • Two-Stage op-amp

ASJC Scopus subject areas

  • General

Cite this

Design and analysis of a two stage operational amplifier for high gain and high bandwidth. / Mahalingam, Savisha A P; Ibne Reaz, Md. Mamun; Rahman, Labonnah F.; Wan Zaki, Wan Mimi Diyana.

In: Australian Journal of Basic and Applied Sciences, Vol. 6, No. 7, 07.2012, p. 247-254.

Research output: Contribution to journalArticle

@article{7c2e6fc700e74de79d9be169635a159b,
title = "Design and analysis of a two stage operational amplifier for high gain and high bandwidth",
abstract = "In this paper a design and comparison between a fully differential RC Miller compensated CMOS op-amp and conventional op-amp is presented. High gain enables the circuit to operate efficiently in a closed loop feedback system, whereas high bandwidth makes it suitable for high speed applications. A novel RC Miller compensation technique is used to optimize the parameters of gain and bandwidth for high speed applications are illustrated in this research work. The design is also able to address any fluctuation in supply or dc input voltages and stabilizes the operation by nullifying. The design is implemented on TSMC 0.18 μm CMOS process at 3.3 V as supply voltage under room temperature 27° C. The simulated result shows that a unity gain bandwidth of 136.8 MHz with a high gain of 92.27 dB is achieved for the proposed op-amp circuit. The total areas of the layouts are 0.000158 mm 2 and 0.000532 mm 2 for conventional and proposed respectively.",
keywords = "Fully differential, High bandwidth, High gain, Two-Stage op-amp",
author = "Mahalingam, {Savisha A P} and {Ibne Reaz}, {Md. Mamun} and Rahman, {Labonnah F.} and {Wan Zaki}, {Wan Mimi Diyana}",
year = "2012",
month = "7",
language = "English",
volume = "6",
pages = "247--254",
journal = "Australian Journal of Basic and Applied Sciences",
issn = "1991-8178",
publisher = "INSInet Publications",
number = "7",

}

TY - JOUR

T1 - Design and analysis of a two stage operational amplifier for high gain and high bandwidth

AU - Mahalingam, Savisha A P

AU - Ibne Reaz, Md. Mamun

AU - Rahman, Labonnah F.

AU - Wan Zaki, Wan Mimi Diyana

PY - 2012/7

Y1 - 2012/7

N2 - In this paper a design and comparison between a fully differential RC Miller compensated CMOS op-amp and conventional op-amp is presented. High gain enables the circuit to operate efficiently in a closed loop feedback system, whereas high bandwidth makes it suitable for high speed applications. A novel RC Miller compensation technique is used to optimize the parameters of gain and bandwidth for high speed applications are illustrated in this research work. The design is also able to address any fluctuation in supply or dc input voltages and stabilizes the operation by nullifying. The design is implemented on TSMC 0.18 μm CMOS process at 3.3 V as supply voltage under room temperature 27° C. The simulated result shows that a unity gain bandwidth of 136.8 MHz with a high gain of 92.27 dB is achieved for the proposed op-amp circuit. The total areas of the layouts are 0.000158 mm 2 and 0.000532 mm 2 for conventional and proposed respectively.

AB - In this paper a design and comparison between a fully differential RC Miller compensated CMOS op-amp and conventional op-amp is presented. High gain enables the circuit to operate efficiently in a closed loop feedback system, whereas high bandwidth makes it suitable for high speed applications. A novel RC Miller compensation technique is used to optimize the parameters of gain and bandwidth for high speed applications are illustrated in this research work. The design is also able to address any fluctuation in supply or dc input voltages and stabilizes the operation by nullifying. The design is implemented on TSMC 0.18 μm CMOS process at 3.3 V as supply voltage under room temperature 27° C. The simulated result shows that a unity gain bandwidth of 136.8 MHz with a high gain of 92.27 dB is achieved for the proposed op-amp circuit. The total areas of the layouts are 0.000158 mm 2 and 0.000532 mm 2 for conventional and proposed respectively.

KW - Fully differential

KW - High bandwidth

KW - High gain

KW - Two-Stage op-amp

UR - http://www.scopus.com/inward/record.url?scp=84867916088&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84867916088&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:84867916088

VL - 6

SP - 247

EP - 254

JO - Australian Journal of Basic and Applied Sciences

JF - Australian Journal of Basic and Applied Sciences

SN - 1991-8178

IS - 7

ER -