Rail to Rail Operational Amplifier for Sample & Hold Circuit in Pipeline ADC
Journal Title: International Journal of Computational Engineering and Management IJCEM - Year 2012, Vol 15, Issue 5
Abstract
The papers presents a 1V rail to rail operational amplifier that has been used as a unity gain buffer in the sample and hold circuit for 1V 10 bit 1Msps pipeline ADC in 0.18µm technology. An open loop architecture is chosen for the implementation of sample and hold circuit. The transmission gate switch is used in the sample and hold circuit for reducing the effect of channel charge injection and clock feed through. Also, the transmission gate switch offers a low resistance as compared to pMOS or nMOS switches switches. The sample and hold circuit speed up to 1Msps has been achieved.
Authors and Affiliations
Shamsher Malik , Ravinder kumar
Keywords
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