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Operational transconductance amplifier design for a 16-bit pipelined ADC

Mukahar, Nordiana and Ruslan, Siti Hawa and Mat Jubadi, Warsuzarina (2008) Operational transconductance amplifier design for a 16-bit pipelined ADC. In: 2nd Regional Engineering Conference 2008 (EnCon 2008), 18-19 December 2008, Kuching, Sarawak.


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In biomedical application, electronic interfacing is fundamental for obtaining information from human body. Designing a high performance analog circuit is becoming increasingly challenging with the persistent trend towards reduced supply voltages and low power consumptions.A fully differential, 5V operational transconductance amplifier (OTA) to be used in a pipeline analog-to-digital converter (ADC) has been designed. The main operational amplifier (Op Amp) circuit is a full differential folded cascode with continuous time common mode feed back (CMFB). The boosting Op Amp is a wide swing OTA circuit. The Op Amp is designed according to a 0.5 µm CMOS14TB technology standard using Tanner Tool. Simulation result shows the unity gain bandwidth of the Op Amp is 9.32 MHz for a 5 pF load and the amplification is 93.27 dB, while the settling time is 163 ns for 0.1 % accuracy to achieve final value with sampling rate of 1 MS/s.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Op Amp, OTA, ADC, wide swing, folded cascode
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Electrical and Electronic Engineering > Department of Electronic Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 19 May 2010 04:07
Last Modified: 29 Apr 2011 06:40
URI: http://eprints.uthm.edu.my/id/eprint/249
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