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Erschienen in:
2010 | OriginalPaper | Buchkapitel
A Low Voltage High Performance OTA in 0.18 Micron with High Linearity
verfasst von : Nikhil Raj, Ranitesh Gupta, Vikram Chopra
Erschienen in: Recent Trends in Networks and Communications
Verlag: Springer Berlin Heidelberg
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The increasing demand of personal health monitoring products with long battery life had forced designers to use of those circuits which consumes low power. Operational Transconductance Amplifier (OTA) operating in subthreshold (weak inversion) region introduces a versatile solution for the realization of low power VLSI building blocks. This paper demonstrates a modified OTA with high linearity and better performance achieved by using High-swing improved-Wilson current mirror for low power and low-frequency applications. The achieved linearity is about ± 1.9 volt and unity gain bandwidth (UGB) of 342.30 KHz. The OTA is operated at power supply of 0.9 volt and consumes power in range of nanowatts. The OTA simulation has been performed in a standard TSMC 0.18 micrometer technology on BSIM 3v3 model using ELDO Simulator.