Enhancing transconductance of ultra‐low‐power two‐stage folded cascode OTA. Issue 21 (1st October 2014)

• Record Type: Journal Article
• Authors: Akbari, M.; Hashemipour, O.
• Is Part Of: Electronics letters. Volume 50:Issue 21(2014)
• Page Start: 1514
• Page End: 1516
• Publication Date: 2014-10-01
• Subjects: operational amplifiers -- compensation -- low‐power electronics -- CMOS analogue integrated circuits -- silicon -- elemental semiconductors; Si -- size 0.18 mum -- gain bandwidth -- DC gain enhancement -- CMOS -- silicon area -- power consumption -- rail‐to‐rail input/output swing -- Gm‐C compensation technique -- operational transconductance amplifier -- ultra‐low‐power two‐stage folded cascode OTA -- transconductance; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2014.2399
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : Using the Gm‐C compensation technique, an ultra‐low‐power two‐stage operational transconductance amplifier (OTA) with rail‐to‐rail input/output swing is presented. The input stage of the proposed OTA has the benefit of transconductance enhancement compared to the conventional OTA with the same power consumption and silicon area. Simulation results in a 0.18 μm CMOS technology show a DC gain enhancement of 9.5 dB as well as 88% improvement in gain bandwidth compared to the conventional folded cascode input stage structure.