Fast pipelined A/D converter in CMOS technology

In this paper, a new 8-bit pipelined A/D converter which has been fabricated in n-well CMOS technology is introduced. Even though a fully, differential op-amp is preferred to obtain a high power supply rejection ratio, a single-ended op-amp is implemented in the A/D converter to investigate the speed performance of the new pipelined A/D converter. The main purpose of this work is to compare the conventional pipelined A/D converter with the new one in terms of speed. According to experiments, the new pipelined converter improves the speed by a factor of 2.5 compared to conventional pipelined A/D converters because it uses more parallel schemes. With the architecture, one can build fast low-power A/D converters in CMOS technology