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Technion - Israel institute of technology department of Electrical Engineering . הטכניון - מכון טכנולוגי לישראל הפקולטה להנדסת חשמל. High speed digital systems laboratory. המעבדה למערכות ספרתיות מהירות. Ultra High Speed Signal Card. Subject :.
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Technion - Israel institute of technology department of Electrical Engineering הטכניון - מכון טכנולוגי לישראלהפקולטה להנדסת חשמל High speed digital systems laboratory המעבדה למערכות ספרתיות מהירות Ultra High Speed Signal Card Subject: Performed by: JeniaKuksin& Alexander Milys Instructor: Mr. YossiHipsh סמסטר חורף 2008 1
High speed digital systems laboratory המעבדה למערכות ספרתיות מהירות Abstract • High Speed Transmission Line Board which will provide an ideal vehicle for learning about Signal Integrity issues like: • Reflections in Transmission Lines • Cross Talk in Transmission Lines • Jitter • Skew 2
High speed digital systems laboratory המעבדה למערכות ספרתיות מהירות System description Instructor High Speed Transmission Line Board Controller Switching System Pulser Transmission Lines Array Student 3
High speed digital systems laboratory המעבדה למערכות ספרתיות מהירות Specification • Hardware • Pulser - creates short (0.5-1 nsec) and long (10-13 nsec) pulse signal with very low rise/fall time (200ps) . • Signal Splitter – launching a signal into a transmission line and converts differential signal to single ended while only one line can be alive at the same time • Analog Switches – transmit the measured voltage signal on input/output of selected transmission line to oscilloscope. • Transmission Lines – will contain 36 microstrip, single ended transmission lines with different terminations. • Controller – Based on Altera DE2 Board, controls all of the operation of the High Speed Transmission Line Board. • PCB Design • 8 layers, 25x30cm board dimensions. • High speed data lines, microstrip and stripline formats. • Rise time of signals range from 150ps to 300ps. • Pre and post layout simulations are required. • Multiple onboard power supplies – many local power planes. • Many identical hierarchical blocks on a schematics require efficient layout reuse. • Design is completed in OrCAD PCB Editor 4
High speed digital systems laboratory המעבדה למערכות ספרתיות מהירות System Block Diagram Controller S3 Connects One channel from 36 To scope S0 0narrow pulse 1wide pulse S2 Connects One channel from 36 To scope Analog Switches Analog Switches S1 Will be OE for splitters Pulser Signal Splitter Z(Source) Transmission Lines 36 lines Termination Z(Load) 1 36 36 36 S5 Control for MCP195 (jitter) 5
High speed digital systems laboratory המעבדה למערכות ספרתיות מהירות Photos 6
