Open AccessNear‐threshold charge pump circuit using dual feedback loop
Author(s) -
Jalalifar M.,
Byun G.S.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.1304
Subject(s) - charge pump , dual (grammatical number) , feedback loop , dual loop , loop (graph theory) , control theory (sociology) , physics , threshold voltage , electronic engineering , optoelectronics , electrical engineering , materials science , voltage , computer science , engineering , transistor , mathematics , capacitor , control (management) , art , literature , computer security , artificial intelligence , combinatorics
A near‐threshold charge pump circuit suitable for a phase‐locked loop‐based frequency synthesiser is presented. The charge pump uses gate switches and dual feedback loops to achieve good up/down current matching characteristics in low‐voltage operation. The applied gate switches reduce the leakage current and the feedback loops provide a more stable operation. Post‐layout simulation results demonstrate that the proposed charge pump circuit consumes only 60 µW with a 0.5 V supply voltage. The charge pump circuit is implemented in a 0.13 µm CMOS process.