Abstract:Electromagnetic crosstalk poses a serious problem within today’s advanced serial communication modules. A major detrimental effect is the degradation of receiver sensitivity in the presence of crosstalk noise. The mitigation of crosstalk penalty becomes increasingly more challenging as data rates increase for higher throughput, as module sizes shrink for increased port density, and as supply rails are reduced for lower power dissipation. In this article, we explore a method for quantifying crosstalk penalty by observing a receiver’s bit-error-ratio (BER) versus the phase difference between the transmitted and received signals. This article also presents actual crosstalk measurement results of three different communication module examples. The application note you have requested is available in Acrobat PDF format: APPLICATION NOTE 3766: HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules (PDF, 126kB) A free Acrobat PDF reader is available from: http://www.adobe.com/products/acrobat/readstep.html We Want Your Feedback! Automatic Updates Would you like to be automatically notified when new application notes are published in your areas of interest? Sign up for EE-Mail™. More Information   APP 3766: Feb 27, 2006 DS1856 Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection Full Data Sheet (PDF, 416kB) Free Samples DS1859 Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors Full Data Sheet (PDF, 812kB) Free Samples DS1862 XFP Laser Control and Digital Diagnostic IC Full Data Sheet (PDF, 620kB) Free Samples MAX3657 155Mbps Low-Noise Transimpedance Amplifier Full Data Sheet (PDF, 756kB) Free Samples MAX3658 622Mbps, Low-Noise, High-Gain Transimpedance Preamplifier Full Data Sheet (PDF, 532kB) Free Samples MAX3670 Low-Jitter 155MHz/622MHz Clock Generator Full Data Sheet (PDF, 852kB) Free Samples MAX3735A 2.7Gbps, Low-Power SFP Laser Drivers Full Data Sheet (PDF, 1.1MB) Free Samples MAX3740A 3.2Gbps SFP VCSEL Driver with Diagnostic Monitors Full Data Sheet (PDF, 428kB) Free Samples MAX3740A 3.2Gbps SFP VCSEL Driver with Diagnostic Monitors Full Data Sheet (PDF, 428kB) Free Samples MAX3744 2.7Gbps SFP Transimpedance Amplifiers with RSSI Full Data Sheet (PDF, 372kB) MAX3745 2.7Gbps SFP Transimpedance Amplifiers with RSSI Full Data Sheet (PDF, 372kB) MAX3746 Low-Power, 622Mbps to 3.2Gbps Limiting Amplifier Full Data Sheet (PDF, 332kB) MAX3748A Compact 155Mbps to 4.25Gbps Limiting Amplifier Full Data Sheet (PDF, 372kB) MAX3793 1Gbps to 4.25Gbps Multirate Transimpedance Amplifier with Photocurrent Monitor Full Data Sheet (PDF, 292kB) MAX3795 1Gbps to 4.25Gbps Multirate VCSEL Driver with Diagnostic Monitors Full Data Sheet (PDF, 824kB) Free Samples MAX3941 10Gbps EAM Driver with Integrated Bias Network Full Data Sheet (PDF, 324kB) Free Samples MAX3942 10Gbps Modulator Driver Full Data Sheet (PDF, 232kB) Free Samples MAX3953 10Gbps 1:16 Deserializer with Clock Recovery Full Data Sheet (PDF, 204kB) MAX3971A +3.3V, 10.7Gbps Limiting Amplifier Full Data Sheet (PDF, 456kB) Free Samples MAX3975 10.7Gbps, +3.3V, Compact VCSEL Driver Full Data Sheet (PDF, 376kB) MAX3982 SFP Copper-Cable Preemphasis Driver Full Data Sheet (PDF, 708kB) Free Samples MAX3991 10Gbps Clock and Data Recovery with Limiting Amplifier Full Data Sheet (PDF, 484kB) MAX3992 10Gbps Clock and Data Recovery with Equalizer Full Data Sheet (PDF, 272kB) MAX8520 Smallest TEC Power Drivers for Optical Modules Full Data Sheet (PDF, 612kB) Free Samples MAX8521 Smallest TEC Power Drivers for Optical Modules Full Data Sheet (PDF, 612kB) Free Samples   Download, PDF Format (126kB)  AN3766, AN 3766, APP3766, Appnote3766, Appnote 3766