Challenges of Calibrated Time-Interleaved High-Speed ADCs
Monday, January 13, 2014 - 4:00pm - 4:50pm
KEC 1001
Aaron Buchwald
Fellow
Entropic Communications
Abstract:
The dream of moving the ADC of a communication receiver all the way to the
antenna is fast becoming a reality. Recent ADCs that take advantage of
time-interleaving and rely heavily on calibration enable new receiver
architectures where the entire spectrum is digitized and all channelization and
demodulation is done in the digital domain. Such systems that are RF-to-Digital
have many advantages, but the design of the requisite ADC remains a challenge
to achieve wide-bandwidth, a high dynamic-range at very low power. This talk
introduces key concepts of calibrated time-interleaved ADCs at a tutorial
level. Examples of specific solutions are presented. Advanced concepts are
introduced. Finally students wishing to pursue this area as a research topic
will be exposed to several unsolved issues and hopefully will be inspired to
extend the state-of-the-art with new and creative solutions.
Speaker Biography:
Dr. Aaron Buchwald has 31 years experience in the field of analog integrated circuit design. He is currently a Fellow at Entropic Communications after their acquisition of Mobius Semiconductor, where he was CEO and founder. Prior to founding Mobius Semiconductor, Dr. Buchwald worked at Broadcom, joining as one of the first members of the analog group with the charter to help build a world-class analog team emphasizing design in a mixed-signal environment.
Dr. Buchwald's work on embedded CMOS Analog-to-Digital Converters (ADCs)
enabled the production of single-chip cable set-top boxes and cable modems with
integrated analog front ends and DSP circuitry. His work was awarded the best
paper prize in 1997 at ISSCC. Later, Dr. Buchwald was responsible for
development of high-speed serial transceivers (XAUI, CX4 and Fiber Channel) at
Broadcom. The initial XAUI transceivers were some of the first to employ
adaptive receive equalization.
Dr. Buchwald was formerly an Assistant Professor at the Hong Kong University of
Science and Technology (HKUST). In his early career, Dr. Buchwald spent two
years as an analog IC designer at Siemens in Munich Germany. Prior to that, he
was with Hughes Aircraft Company in El Segundo, CA.
Dr. Aaron Buchwald was born in Ames, Iowa and received a BSEE from the
University of Iowa, Iowa City, Iowa, and an M.S. and Ph.D. from the University
of California, Los Angeles. He is co-author of the book Integrated Fiber-Optic
Receivers. He has taught professional short-courses on data converters and
serial transceivers.
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