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Oct 2013 Sharif University of Technology 1
Simple Half-rate phase detector detects but has no reference!
Optical Communications: Circuits, Systems and Devices
Oct 2013 Sharif University of Technology 2
Half-rate linear phase detector detects plus producing a reference!
But do I believe it?
Optical Communications: Circuits, Systems and Devices
Oct 2013 Sharif University of Technology 3
Optical Communications: Circuits, Systems and Devices
Oct 2013 Sharif University of Technology 4
Frequency detector shows that slow and fast clocks can have a bang bang performance using three flip-flops.
Optical Communications: Circuits, Systems and Devices
Oct 2013 Sharif University of Technology 5
CDR sample architecture 1. Frequency Detector and Phase Detector both used.
Optical Communications: Circuits, Systems and Devices
Oct 2013 Sharif University of Technology 6
CDR Sample Architecture 2.FD plus PD! Coarse plus fine VCO Control
Optical Communications: Circuits, Systems and Devices
Oct 2013 Sharif University of Technology 7
CDR Sample Architecture 3.Using two coupled VCO’s
Optical Communications: Circuits, Systems and Devices
Oct 2013 Sharif University of Technology 8
CDR Sample Archtecture 4.Using External reference.
Optical Communications: Circuits, Systems and Devices
Oct 2013 Sharif University of Technology 9
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