CMOS Analog Integrated Circuits

B

Transistor sizing in building blocks

CONTENTS

B.1    MOS transistor

B.2    Amplifier

B.3    Comparator and latch

B.4    Bibliography

Transistor sizing affects the performance characteristics (speed, power consumption, chip area, etc.) of integrated circuits. It is an iterative process that is generally achieved using SPICE-based simulation tools. Because the design parameters such as transistor sizes and bias currents depend on the performance metrics that are nonlinear functions, their optimal values may be derived only using computation-intensive programs. The effects of manufacturing yields are minimized by taking into account the process and operating-condition variations

The design variables are the aspect ratios (width over length) ...