Chin. J. Semicond. > 2006, Volume 27 > Issue 12 > 2101-2105

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A 1V,156.7μW,65.9dB Rail-to-Rail Operational Amplifier by Means of Negative Resistance Load and Replica-Amplifier Gain Enhancement

Liu Airong and Yang Huazhong

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Abstract: A low-voltage,low-power,and high-gain rail-to-rail operational amplifier(OpAmp)is presented.The replica-amplifier gain enhancement technique is applied to improve the DC gain of the amplifier,which does not degrade the output swing and is very suitable for low-voltage applications.In a 0.18μm standard CMOS process,a 1V OpAmp with rail-to-rail output is designed.For a load capacitance of 5pF,simulation by HSPICE shows that this OpAmp achieves an effective open-loop DC gain of 65.9dB,gain bandwidth of 70.28 MHz,and phase margin of 50℃ with a quiescent power dissipation of 156.7μW.

Key words: low-voltage low-powerhigh DC gainreplica-amplifier gain enhancementnegative resistance load

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    Received: 18 August 2015 Revised: 19 August 2006 Online: Published: 01 December 2006

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      Liu Airong, Yang Huazhong. A 1V,156.7μW,65.9dB Rail-to-Rail Operational Amplifier by Means of Negative Resistance Load and Replica-Amplifier Gain Enhancement[J]. Journal of Semiconductors, 2006, In Press. Liu A R, Yang H Z. A 1V,156.7μW,65.9dB Rail-to-Rail Operational Amplifier by Means of Negative Resistance Load and Replica-Amplifier Gain Enhancement[J]. Chin. J. Semicond., 2006, 27(12): 2101.Export: BibTex EndNote
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      Liu Airong, Yang Huazhong. A 1V,156.7μW,65.9dB Rail-to-Rail Operational Amplifier by Means of Negative Resistance Load and Replica-Amplifier Gain Enhancement[J]. Journal of Semiconductors, 2006, In Press.

      Liu A R, Yang H Z. A 1V,156.7μW,65.9dB Rail-to-Rail Operational Amplifier by Means of Negative Resistance Load and Replica-Amplifier Gain Enhancement[J]. Chin. J. Semicond., 2006, 27(12): 2101.
      Export: BibTex EndNote

      A 1V,156.7μW,65.9dB Rail-to-Rail Operational Amplifier by Means of Negative Resistance Load and Replica-Amplifier Gain Enhancement

      • Received Date: 2015-08-18
      • Accepted Date: 2006-06-05
      • Revised Date: 2006-08-19
      • Published Date: 2006-12-04

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