DocumentCode
74631
Title
0.013 mm2, kHz-to-GHz-bandwidth, thirdorder all-pole lowpass filter with 0.52-to- 1.11 pW/pole/Hz efficiency
Author
Yong Chen ; Pui-In Mak ; Li Zhang ; He Qian ; Yan Wang
Author_Institution
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Volume
49
Issue
21
fYear
2013
fDate
October 10 2013
Firstpage
1340
Lastpage
1342
Abstract
A third-order all-pole analogue lowpass filter (LPF) with kHz-to-GHz bandwidth tunability is proposed. It embeds a current-reuse active inductor into a current-scalable source follower to realise three concurrently tunable poles in a single branch. The LPF fabricated in 0.18 μm CMOS measures a tunable - 3 dB cutoff from 0.8 kHz to 1.2 GHz, under a scalable power of 1.25 nW to 4.01 mW. Owing to no tuning capacitor, the die area is extremely compact (0.013 mm2) and the achieved filter efficiency is 0.52 to 1.11 pW/pole/Hz.
Keywords
CMOS integrated circuits; UHF filters; UHF integrated circuits; VHF filters; inductors; integrated circuit measurement; low-pass filters; CMOS technology; LPF; bandwidth 0.8 kHz to 1.2 GHz; bandwidth tunability; current-reuse active inductor; current-scalable source follower; gain -3 dB; power 1.25 nW to 4.01 mW; single branch tunable pole; size 0.18 mum; third-order all-pole analogue lowpass filter; tuning capacitor;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2013.2670
Filename
6651366
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