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Welcome to the RX40 project web page! This page contains information on the RX40 ASIC, a custom-developed receiver for the CMS tracker digital optical link.
Main featuresThe CMS tracker control system will use approximately 1000 digital optical links for the transmission of timing, trigger and control signals. These digital signals, transmitted serially at a bitrate of 40 Mbit/s (80 Mbit/s for the clock signal), will be converted into electrical signals by a PIN photodiode at the receiver end. An IC, coupled to the photodiode, will then amplify the signal and transfer it in LVDS logic to the other circuit s along the control chain. As one of the transmission channel ends will sit inside the CMS detector, hence in a radiation environment, its components nee to be radiation tolerant. RX40 has been developed to this purpose in a commercial quarter micron technology using radiation-tolerant design practices. The main feature of the ASIC are:
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Last modified: 08 October 2001 |