Advanced analog circuit design on a digital Sea-of-Gates Array

High performance analog circuits have been realised on a purely digital Sea-of-Gates Array: an 8 bit weighted current DA-converter (typical INL of 0.2 LSB) and a class AB Opamp that has a quiescent supply current of only 23 /spl mu/A, and that can drive 3.4 V/sub pp/ into a 1 k/spl Omega/ load with a THD<0.1% (5 V supply). Dedicated CAD tools have been developed for a fast and reliable layout of the analog circuitry on the SOG array.<
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