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A Wideband Inductorless dB-Linear Automatic Gain Control Amplifier Using a Single-Branch Negative Exponential Generator for Wireline Applications
Kong L.3; Chen Y.1; Boon C.C.3; Mak P.-I.1; Martins R.P.1
2018-10-01
Source PublicationIEEE Transactions on Circuits and Systems I: Regular Papers
ISSN15498328
Volume65Issue:10Pages:3196-3206
Abstract

This paper reports a wideband inductorless automatic gain control (AGC) amplifier for wireline applications. To realize a dB-linear AGC range, a pseudo-folded Gilbert cell driven by a single-branch negative exponential generator (NEG) is proposed as the core variable-gain amplifier. The NEG features a composite of dual Taylor series to extend the AGC approximation range without sacrificing the precision. Fabricated in 65-nm CMOS, the AGC amplifier occupies a tiny die area of 0.045 mm and consumes 28 mW at 1.2 V. Measured over a dB-linear gain range of 40 dB, < ± 1 dB gain error is achieved and the 3-dB bandwidth stays roughly constant at 7 GHz. For the closed-loop AGC measurement, the input dynamic range is 40 dB (10 mV to 1 V) for a BER <10 under a 2 - 1 PRBS data at 10 Gb/s. The achieved figure-of-merit (FOM) of 2.8 pJ/bit compares favorably with state-of-the-art.

KeywordAutomatic Gain Control (Agc) Amplifier Bipolar Junction Transistors (Bjts) Cmos Db-linear Dynamic Range Negative Exponential Generator (Neg) Pseudo-exponential Function Rational Approximation Taylor Series
DOIhttp://doi.org/10.1109/TCSI.2018.2827065
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000444025900007
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Citation statistics
Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.Universidade de Macau
2.Instituto Superior Técnico
3.Nanyang Technological University
Recommended Citation
GB/T 7714
Kong L.,Chen Y.,Boon C.C.,et al. A Wideband Inductorless dB-Linear Automatic Gain Control Amplifier Using a Single-Branch Negative Exponential Generator for Wireline Applications[J]. IEEE Transactions on Circuits and Systems I: Regular Papers,2018,65(10):3196-3206.
APA Kong L.,Chen Y.,Boon C.C.,Mak P.-I.,&Martins R.P..(2018).A Wideband Inductorless dB-Linear Automatic Gain Control Amplifier Using a Single-Branch Negative Exponential Generator for Wireline Applications.IEEE Transactions on Circuits and Systems I: Regular Papers,65(10),3196-3206.
MLA Kong L.,et al."A Wideband Inductorless dB-Linear Automatic Gain Control Amplifier Using a Single-Branch Negative Exponential Generator for Wireline Applications".IEEE Transactions on Circuits and Systems I: Regular Papers 65.10(2018):3196-3206.
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