Open AccessPassive quantisation error extraction in continuous‐time delta–sigma modulators
Author(s) -
Han C.,
Maghari N.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.0884
Subject(s) - integrator , delta sigma modulation , operational amplifier , sigma , electronic engineering , delta modulation , control theory (sociology) , computer science , node (physics) , engineering , voltage , physics , electrical engineering , bandwidth (computing) , artificial intelligence , pulse amplitude modulation , telecommunications , cmos , amplifier , control (management) , structural engineering , quantum mechanics , pulse (music)
A new method for quantisation error extraction in continuous‐time delta–sigma modulators (CTDSMs) is proposed. The proposed method avoids the use of additional active components such as transconductors and opamps and uses only passive components. Instead, the virtual ground of the second stage integrator is used as a summing node and is utilised to extract the quantisation error. Thus, multi‐stage CTDSM can be implemented in a power and area efficient way.