Implementation of Supply and Temperature Insensitive Bandgap References for VCO Applications
V. Narasimha Nayak1, Venkata Ratnam Kolluru2, N. Hari Krishna3, CH. Sai Abhiram4, D. Tejaswini5
1V Narasimha Nayak, Assistant Professor, Department of ECE, Koneru Lakshmaiah Education Foundation, Vaddeswaram (A.P), India.
2Venkata Ratnam Kolluru, Associate Professor, Department of ECM, Koneru Lakshmaiah Education Foundation, Vaddeswaram (A.P), India.
3N.Hari Krishna , Student, Department of ECE, Koneru Lakshmaiah Education Foundation, Vaddeswaram (A.P), India.
4CH.Sai Abhiram, Student, Department of ECE, Koneru Lakshmaiah Education Foundation, Vaddeswaram (A.P), India.
5D.Tejaswini , Student, Department of ECE, Koneru Lakshmaiah Education Foundation, Vaddeswaram (A.P), India
Manuscript received on 01 May 2019 | Revised Manuscript received on 15 May 2019 | Manuscript published on 30 May 2019 | PP: 308-312 | Volume-8 Issue-7, May 2019 | Retrieval Number: G5209058719/19©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: Bandgap reference is one of the major building element in analog and mixed signal circuits. A bandgap reference is a temperature and voltage independent circuit which is mostly used in the analog IC’s. Analog circuits incorporate current and voltage references extensively. This paper mainly deals with two different bandgap reference circuits i.e. a conventional and a proposed bandgap circuits that are designed and simulated using LT spice directives. The obtained simulation results shows that proposed BGR is less sensitive to the supply and temperature compared to the conventional BGR circuit. A Voltage controlled oscillator, viz. 5 stage is designed which is driven with both BGRs’ and is compared. The simulations are carried out using LT spice tool using 90 nm technology.
Keyword: Bandgap Reference, Power Supply Sensitivity (PSS), Voltage Controlled Oscillators.
Scope of the Article: Internet and Web Applications.