Open Access0.9 V third‐order 132 MHz single‐OPAMP analogue filter in 28 nm CMOS
Author(s) -
De Matteis M.,
Donno A.,
D'Amico S.,
Baschirotto A.
Publication year - 2017
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.2016.3273
Subject(s) - operational amplifier , cmos , analogue filter , filter (signal processing) , electronic engineering , low pass filter , active filter , node (physics) , electrical engineering , amplifier , engineering , physics , voltage , digital filter , acoustics
A 28 nm CMOS‐bulk lowpass analogue filter architecture is hereby proposed. The filter is based on an improved Active‐ G m ‐RC structure, where both poles of a Miller‐compensated operational amplifier (OPAMP) have been used for synthesising a third‐order filter. Several well‐known issues related to the 28 nm process node have been hereby mitigated by proper circuit/design techniques, enabling large signal‐to‐noise ratio (SNR) and 13.5 dBm IIP3. The proposed circuital solution performs 59 dB‐SNR at 340 µW power consumption from a single 0.9 V supply‐voltage. This allows one of the higher figure‐of‐merit (156 dB) in sub‐1 V analogue filters state of the art.