Presentation:
A Process and Temperature Insensitive CMOS Linear TIA for 100Gbps/lambda PAM-4 Optical Links
Kadaba Lakshmikumar, Cisco Systems, Allentown, PA.
Abstract
A PVT insensitive linear TIA for 53 GBd PAM-4 optical links is
reported. The 16 nm FinFET CMOS chip consumes 61 mW with < 2 % THD
at 600 mVpp differential swing, 27 GHz bandwidth, input
referred noise density 18.3 pA/sqrt(Hz),
and transimpedance range of 63 to 80 dBohm.
Biography
Kadaba R. (Kumar) Lakshmikumar received his B.E. and M.E. degrees
in Electrical Communication Engineering from the Indian Institute
of Science, Bangalore, India, and Ph.D. degree in Electrical
Engineering from Carleton University, Ottawa, Canada. He did
pioneering work in the area of modeling mismatch in MOS devices
for his doctoral work. The standard deviation of mismatch was
shown to be inversely proportional to the square-root of the
channel area. His paper in the December 1986 issue of the
IEEE Journal of Solid-State Circuits is among the top 20 cited
publications of the journal between 1968 and 1992.
Lakshmikumar has made lasting contributions to the field of IC
design through his leadership in identifying and solving
technically challenging problems. He presented a tutorial
titled "PLL Design in Nanometer CMOS" at ISSCC 2010.
The tutorial illustrates design techniques for overcoming
large variability, low supply voltage and high leakage.
In 2015, he presented a short course, "Clock and Data
Recovery Techniques for Optical Communication Systems" at CSICS.
He has held senior engineering positions at Bell Labs, Multilink
and Conexant Systems. Currently he is heading the analog design
group at Cisco Systems' Silicon Photonics division in Allentown,
PA. He has served on the Technical Program Committees of IEEE
Custom Integrated Circuits Conference and IEEE International
Solid State Circuits Conference and Compound Semiconductor
Integrated Circuits Symposium. He is an associate editor of
the IEEE Journal of Solid-State Circuits. He has mentored a
number of graduate students and serves as an external examiner
for Ph.D. candidates. Lakshmikumar is a Fellow of IEEE.