Abstract: This application note will discuss common causes of vertical eye closure in low speed (<622Mbps) optical transmitters. Design suggestion and tests will be provided to help diagnose the transmitter. Methods will also be provided to improve the performance. The application note will focus primarily on the MAX3735A and MAX3646 as these devices are commonly used in multi-rate (155Mbps to 2.7Gbps) and low data rate applications. The application note you have requested is available in Acrobat PDF format: APPLICATION NOTE 3725: HFAN-02.6.0: Reducing Noise and Wander in Low-Speed (<622Mbps) Optical Transmitters (PDF, 354kB) A free Acrobat PDF reader is available from: http://www.adobe.com/products/acrobat/readstep.html Related Parts   APP 3725: Dec 13, 2005 MAX3646 155Mbps to 622Mbps SFF/SFP Laser Driver with Extinction Ratio Control Full Data Sheet (PDF, 288kB) Free Samples MAX3735A 2.7Gbps, Low-Power SFP Laser Drivers Full Data Sheet (PDF, 1.1MB) Free Samples 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™. We Want Your Feedback!   Download, PDF Format (354kB)  AN3725, AN 3725, APP3725, Appnote3725, Appnote 3725