Low power and high speed CMOS current comparators

Over the past few decades, a current comparator in CMOS technology has been used in the wide range of application in analogue, multiple-valued logic (MVL) circuits and other electronic products. Current comparator usually used in analog to digital (ADC) conversion and any sensing detector or devices. The design of comparator has been successfully performed by applying several techniques and approach to improve the performance. This paper presents an overview of evolutionary CMOS current comparator, describing the contributions in low power and high speed according a collection of existing proposal. Various schemes and information have been taken to help researcher who will continue work on significant further developments. Lastly, some consideration of recent architectures such as power consumption and speed in current comparator are presented.