J. Semicond. > 2009, Volume 30 > Issue 8 > 085002
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SEMICONDUCTOR INTEGRATED CIRCUITS

A novel fully differential telescopic operational transconductance amplifier

Li Tianwang, Ye Bo and Jiang Jinguang

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DOI: 10.1088/1674-4926/30/8/085002

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Abstract: A novel fully differential telescopic operational transconductance amplifier (OTA) is proposed. An additional PMOS differential pair is introduced to improve the unit-gain bandwidth of the telescopic amplifier. At the same time, the slew rate is enhanced by the auxiliary slew rate boost circuits. The proposed OTA is designed in a 0.18 µm CMOS process. Simulation results show that there is a 49% improvement in the unit-gain bandwidth compared to that of a conventional OTA; moreover, the DC gain and the slew rate are also enhanced.

Key words: OTA,  fully differential,  unit-gain bandwidth,  slew rate

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    Received: 18 August 2015 Revised: 01 April 2009 Online: Published: 01 August 2009

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      Article Navigation >  Journal of Semiconductors  > 2009  >  30(8): 085002
      Li Tianwang, Ye Bo, Jiang Jinguang. A novel fully differential telescopic operational transconductance amplifier[J]. Journal of Semiconductors, 2009, 30(8): 085002. doi: 10.1088/1674-4926/30/8/085002 ****Li T W, Ye B, Jiang J G. A novel fully differential telescopic operational transconductance amplifier[J]. J. Semicond., 2009, 30(8): 085002. doi:  10.1088/1674-4926/30/8/085002.
      Citation:
      Li Tianwang, Ye Bo, Jiang Jinguang. A novel fully differential telescopic operational transconductance amplifier[J]. Journal of Semiconductors, 2009, 30(8): 085002. doi: 10.1088/1674-4926/30/8/085002 ****
      Li T W, Ye B, Jiang J G. A novel fully differential telescopic operational transconductance amplifier[J]. J. Semicond., 2009, 30(8): 085002. doi:  10.1088/1674-4926/30/8/085002.
      shu

      A novel fully differential telescopic operational transconductance amplifier

      DOI: 10.1088/1674-4926/30/8/085002

      • Department of Integrated Circuits and Communication Software, International School of Software, Wuhan University, Wuhan 430079, China

      • Faculty of Computer & Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China

      • Department of Integrated Circuits and Communication Software, International School of Software, Wuhan University, Wuhan 430079, China

      • Received Date: 2015-08-18
      • Accepted Date: 2008-11-24
      • Revised Date: 2009-04-01
      • Published Date: 2009-07-31

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