Design and Implementation of High Gain,High Bandwidth CMOS Folded cascode Operational Transconductance Amplifier

  jalpa solanki,  Kehul shah

This paper deals with design and analysis of CMOS folded-cascode operational transconductance amplifier. Operational transconductance Amplifier (OTA) is a fundamental building block of analog circuits and systems which were previously implemented by using OPAMP. First description of optimum OTA architecture is given to optimize transistor sizing. Second, a design of folded cascode OTA, which is useful in high frequency applications like RF application. In order to implement higher frequency application, we need OTAs which have both high (DC) gain and a high bandwidth. The designed folded-cascode OTA are implemented in 0.13µm CMOS process with BSIM3V3 level 49 MOSFET model and simulation results are performed using SPICE software. From it is found that designed folded cascode OTA has a 53.99dB DC gain, around 351 MHz unity gain bandwidth and 53° phase margin.

Keywords- Folded-cascode OTA, Unity gain bandwidth, Op-amp

Unique Identification Number - IJEDR1401095
Page Number(s) - 532-536
Pubished in - Volume 2 | Issue 1 | March 2014
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  jalpa solanki,  Kehul shah,   "Design and Implementation of High Gain,High Bandwidth CMOS Folded cascode Operational Transconductance Amplifier", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.2, Issue 1, pp.532-536, March 2014, Available at :http://www.ijedr.org/papers/IJEDR1401095.pdf