Design and VLSI implementation of SAR Analog to Digital Converter Using Analog Mixed Signal

Abstract

The creation of an 8-bit SAR ADC with a 0.8V and 5V input voltage is discussed in the publication. Cadence Virtuoso software was used to implement the design, which made use of both 180nm and 90nm technology. The comparator block, which was created using Verilog code and required to operate properly, was the main emphasis of the design. Since the comparator is the block that uses the most power overall, optimising it took up a sizable chunk of the design process. The DAC sub-block was implemented using an MDAC network to increase the ADC's accuracy. The ADC was driven by asynchronous control logic, which was implemented using Verilog code and did not require a clock signal.