Paper Info
Title
A digitally tunable stabilization technique for transimpedance amplifiers in optical wireless and visible light communication links
Abstract
A digitally controllable stabilization technique for bandwidth-enhanced shunt-feedback (SFB) transimpedance amplifiers (TIA) with active Gm-feedback is proposed. The Gm-feedback programmability uses a switchable tail current network to digitally control the global TIA phase margin and correct for any instability resulting from device modeling imperfections, unconsidered layout parasitics or PVT variations. The proposed technique is demonstrated using a dual-stage TIA implemented in 0.35 μm CMOS technology. The TIA consumes 10.9 mA from a 3.3 V DC voltage supply, with 600 μA additional current from the phase margin correcting circuits, to achieve around 25 degrees phase margin control range. The TIA was tested as a part of a fully integrated optical receiver in a 2.7-m link visible light communication (VLC) setup. The phase margin control bits allowed bit-error-rate (BER) improvement by three orders of magnitude (<; 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-10</sup> ) at 1.8 Gb/s.
Year
DOI
Venue
2016
10.1109/NEWCAS.2016.7604743
2016 14th IEEE International New Circuits and Systems Conference (NEWCAS)
Keywords
Field
DocType
Stabilization,transimpedance amplifier (TIA),phase margin,photo-detector,optical receiver,visible light communication (VLC),optical wireless communication (OWC)
Optical amplifier,Computer science,Electronic engineering,CMOS,Visible light communication,Phase margin,Transimpedance amplifier,Optical wireless,Electronic circuit,Electrical engineering,Amplifier
Conference
ISSN
ISBN
Citations 
2472-467X
978-1-4673-8901-3
0
PageRank 
References 
Authors
0.34
2
3
Name
Order
Citations
PageRank
Bassem Fahs1143.56
Asif Chowdhury201.35
Mona Mostafa Hella36814.51