Open Access6.25 GHz, 1 mV input resolution auxiliary circuit assisted comparator in 65 nm CMOS process
Author(s) -
Rajkumar Kala Siddharth,
Chandaka Sushma,
Kumar Y. B Nithin,
Moodabettu Harishchandra Vasantha,
Bonizzoni Edoardo
Publication year - 2020
Publication title -
iet circuits, devices and systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 49
eISSN - 1751-8598
pISSN - 1751-858X
DOI - 10.1049/iet-cds.2019.0421
Subject(s) - comparator , cmos , comparator applications , converters , voltage , electronic engineering , process (computing) , power (physics) , computer science , electrical engineering , engineering , physics , operating system , quantum mechanics
The need for the high‐speed analogue‐to‐digital converters demands the use of regenerative comparators. The strong positive feedback present in the regenerative comparators helps the comparator to work efficiently at the high‐speed operations. This work proposes a low power auxiliary circuit to improve the high‐frequency performance of the comparator. The proposed architecture along with the conventional comparators is simulated in 65‐nm complementary metal oxide semiconductor (CMOS) technology with a supply voltage of 0.9 V. The maximum operating frequency of the proposed comparator is 6.25 GHz for a differential input voltage of 1 mV.