Premium
CMOS Non‐tailed differential pair
Author(s) -
Di Cataldo Giuseppe,
Grasso Alfio Dario,
Pennisi Salvatore,
Scotti Giuseppe,
Trifiletti Alessandro
Publication year - 2016
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.2172
Subject(s) - cmos , common mode signal , voltage , current (fluid) , electrical engineering , differential (mechanical device) , oxide , channel (broadcasting) , electronic engineering , semiconductor , engineering , materials science , optoelectronics , physics , topology (electrical circuits) , digital signal processing , analog signal , metallurgy , aerospace engineering
Summary A continuous‐time complementary metal–oxide–semiconductor differential pair that does not require the traditional tail current source as a way to control the direct current and common‐mode current is presented. Compared with a p ‐channel long‐tailed pair, the proposed non‐tailed solution operates under a higher maximum input common‐mode voltage that includes ( V DD + V SS )/2 even under low supply voltages. Experimental measurements on a prototype fabricated in a 0.35‐µm technology (with metal – oxide – semiconductor thresholds greater than 0.6 V) confirm this behavior for supply voltages as low as 1.2 V, whereas the long‐tailed pair with the same technology offers the same capability only for supplies higher than 1.6 V. Copyright © 2015 John Wiley & Sons, Ltd.