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 (VDD+VSS)/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.
CMOS Non-tailed differential pair
DI CATALDO, Giuseppe;GRASSO, ALFIO DARIOCo-primo
;PENNISI, Salvatore
;
2016-01-01
Abstract
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 (VDD+VSS)/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.File | Dimensione | Formato | |
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