This paper describes a parameter extraction system that can easily accommodate many MOSFET models. The model-adaptability is contributed by tow factors; a model-adaptable initial value estimation technique and an environment which stores and reuses extraction procedures. A designer can easily develop an extraction procedure for a new MOSFET model by modifying a procedure for another MOSFET model developed previously. We have verified that the system is suitable for major SPICE models.

We present a current mode cyclic analog-to-digital converter that is suitable for submicron LSI fabrication processes. Our converter is composed of sample-and-hold circuits with regulated cascode configuration which offers high output impedance and wide outoput range. The circuit requires small area since the architecture depends on neither precise analog transistors nor ratio-matched capacitors. We have designed and fabricated a test circuit that has an area of 0.014mm2 using a 0.8µm CMOS process. The circuit is examined to perform 8-bit resolution at a sampling rate of 40kHz and average power dissipation of 370µW at 4V supply voltage.