0.013 mm2, kHz‐to‐GHz‐bandwidth, third‐order all‐pole lowpass filter with 0.52‐to‐1.11 pW/pole/Hz efficiency. Issue 21 (1st October 2013)

• Record Type: Journal Article
• Authors: Chen, Yong; Mak, Pui‐In; Zhang, Li; Qian, He; Wang, Yan
• Is Part Of: Electronics letters. Volume 49:Issue 21(2013)
• Page Start: 1340
• Page End: 1342
• Publication Date: 2013-10-01
• Subjects: CMOS integrated circuits -- inductors -- integrated circuit measurement -- low‐pass filters -- UHF filters -- UHF integrated circuits -- VHF filters; power 1.25 nW to 4.01 mW -- bandwidth 0.8 kHz to 1.2 GHz -- gain ‐3 dB -- size 0.18 mum -- tuning capacitor -- CMOS technology -- single branch tunable pole -- current‐scalable source follower -- current‐reuse active inductor -- bandwidth tunability -- LPF -- third‐order all‐pole analogue lowpass filter; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.2670
• Languages: English
• ISSNs: 0013-5194

Abstract

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 mm 2 ) and the achieved filter efficiency is 0.52 to 1.11 pW/pole/Hz.