[Legacy Report] A Low Cost Digital Eye Analyzer Circuit
#Bob
#Schwanke
#Sr.
#Applications
#Engr.
#Inphi
#Corp.
For design, debugging and production, digital signals are analyzed using a Digital Eye Analyzer (DEA). A DEA is a digital sampling scope which can plot and analyze the eye diagram of a digital signal. Various key parameters for digital signals, such as signal to noise ratio, rise/fall time, jitter, eye mask compliance, etc. are specified by the pertinent standard and should be guaranteed and maintained for reliable operation. DEAs are used to measure these parameters to validate the compliance. Traditional DEAs are expensive and bulky, which limits their use. In this paper, we will present a low-cost DEA circuit that is based on an 18 GHz Track and Hold Amplifier that can benefit both field and production testing as well as a lab bench-top tester. The proposed low-cost DEA circuit is able to cover data rates as high as 12 Gb/s..
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