Design and Performance analysis of Constantgm Low-Power Rail-to-Rail Operational Amplifier
Anand Kumar Singh1, Abdul Manan2
1Abdul Manan, Department of Electronics and Communication Engineering, Ajay Kumar Garg Engineering College, Ghaziabad (U.P), India.
2Anand Kumar Singh, Department of Electronics and Communication Engineering, Ajay Kumar Garg Engineering College, Ghaziabad (U.P), India.
Manuscript received on 21 January 2013 | Revised Manuscript received on 28 January 2013 | Manuscript published on 30 January 2013 | PP: 26-29 | Volume-1 Issue-6, January 2013 | Retrieval Number: F0399021613/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A low power CMOS op-amp rail to rail op-amp. We realizes in SCNO 180nm technology. Under 1.8 power supply voltage. A constant transcondutance is ensured for the whole common-mode input range. The class AB output stage also has a full voltage swing. The circuit provides a gain bandwidth of 17.3-MHz and a DC gain of 83.67 dB. The input transistors operate in weak inversion, which have big gm/Id value, so the power consumption is reduced.
Keywords: CMOS, SCNO, DC, 173-MHz.
Scope of the Article: Low-power Design