Shanthi Pavan,Yannis Tsividis's High Frequency Continuous Time Filters in Digital CMOS PDF

By Shanthi Pavan,Yannis Tsividis

there's an ever expanding development in the direction of placing whole platforms on a unmarried chip. which means analog circuits must coexist at the comparable substrate in addition to immense electronic platforms. for the reason that applied sciences are optimized with those electronic platforms in brain, designers should make do with common CMOS strategies within the years yet to come. We tackle analog clear out layout from this attitude. Filters shape very important blocks in functions starting from computing device disc-drive chips to radio transceivers. during this e-book, we improve the idea and strategies important for the implementation of excessive frequency (hundreds of megahertz) programmable non-stop time filters in average CMOS methods. on the grounds that excessive density poly-poly capacitors aren't to be had in those applied sciences, replacement capacitor constructions need to be discovered. Met- steel capacitors have low particular capacitance. an alternate is to exploit the (inherently nonlinear) capacitance shaped by way of MOSFET gates. In bankruptcy 2, we specialise in using MOS capacitors as integrating parts. A physics-based version which predicts distortion thoroughly is gifted for a two-terminal MOS constitution in accumulation. Distortion in those capacitors as a functionality of sign swing and bias voltage is computed. bankruptcy three reports continuous-time clear out architectures within the mild of bias-dependent integrating capacitors. We additionally speak about the benefits and demerits of assorted CMOS transconductance parts. the issues encountered in designing excessive frequency programmable filters are mentioned in detail.

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