Agilent 5991-4084EN De-Mystifying the 28 Gb s PCB Channel Design to Measurement [27] free download

File name 5991-4084EN De-Mystifying the 28 Gb s PCB Channel_ Design to Measurement [27].pdf

DesignCon 2014 De-Mystifying the 28 Gb/s PCB Channel: Design to Measurement Jack Carrel, Xilinx Heidi Barnes, Agilent Technologies Robert Sleigh, Agilent Technologies Hoss Hakimi, Xilinx Mike Resso, Agilent Technologies Abstract A design methodology will be demonstrated for 28 Gb/s SERDES channels using the Xilinx Virtex-7 Transmitter (Tx) to show the required trade-offs that enable robust performance that is easy to verify with measurement. Tx and Rx characterization provide information on the spectral demands for accurate de-embedding of the passive fixture channel; simulation of cables, connectors, vias, PCB transmission-lines, and package ball-out determine critical elements for performance; physical routing along with test structures will determine the ability of measurements to verify performance at the DUT package bumps. Novel 1 port fixture measurements will be compared with previous full path probing and 2x test fixture measurement methods to enable reliable fixture removal. Combining design and measurement methodology enables the capture of 28 Gb/s Tx waveforms at the BGA package bumps even with frequency dependent losses in the fixture path connection to the measuring oscilloscope. i Author(s) Biography Heidi Barnes, is a Senior Application Engineer for High Speed Digital applications in the EEsof EDA Group of Agilent Technologies. Past experience includes over 6 years in signal integrity for ATE test fixtures for Verigy, an Advantest Group, and 6 years in RF/Microwave microcircuit packaging for Agilent Technologies. She rejoined Agilent Technologies in 2012, and holds a Bachelor of Science degree in electrical engineering from the California Institute of Technology. Mike Resso, the Signal Integrity Applications Expert in the Component Test Division of Agilent Technologies, has over twenty years of experience in the test and measurement industry. His background includes the design and development of electro-optic test instrumentation for aerospace and commercial applications. His most recent activity has focused on the complete multiport characterization of high speed digital interconnects utilizing Time Domain Reflectometry (TDR) and Vector Network Analysis (VNA). Mike has twice received the Agilent Technologies Spark of Insight award for his contributions to the company. Mike received a Bachelor of Science degree in Electrical and Computer Engineering from University of California. Rob Sleigh is a Product Marketing Engineer for sampling scopes in Agilent Technologies' Oscilloscope Products Division. He is responsible for product development for the division's high-speed electrical and optical digital communications analyzer and jitter test products. Rob's experience at Agilent Technologies/Hewlett-Packard includes 5 years in technical support, and over 8 years in sales and technical marketing. Prior to working at Agilent Technologies/HP, Rob worked for 10 years at Westel