摘要
A 0.5 V high-speed comparator with rail-to-rail input range is presented. Unlike conventional rail-to-rail comparators that use both NMOS and PMOS input devices, the proposed design takes advantage of zero-V (t) NMOS devices that are available in many CMOS processes tailored for analog and mixed signal applications. Design issues associated with the use of zero-V (t) devices in comparator circuits are analyzed. Based on a 0.13 mu m CMOS technology, the proposed design is compared with recently reported sub 1 V comparators and it shows significant performance improvement by the proposed design.
- 出版日期2012-10