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Push me, pull you

SoC and standard products are creating conflicting requirements for analogue processes. By Paul Dempsey.

For some time, 0.18µm cmos has been considered the ‘sweet spot’ for the implementation of a/d conversion. The node offers high performance transistors, the mosfets meet the requirements of high resolution applications and a 1.8V power supply has allowed designers to reuse architectures and other techniques that boast a couple of decades of maturity.
However, at next month’s International Solid State Circuits Conference (ISSCC) in San Francisco (12 to 15 February -- for more, download isscc.doc using the link on the right), more than half the papers on a/d converters are for implementations at 90nm and smaller. So, is the analogue world gearing up for a major node shift?

Paul Dempsey

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