Abstract
Jitter transfer analysis using discrete z-domain transfer functions of a high order giga-bit rate phase locked loop (PLL) is presented. An impulse invariance method that produces the same z-domain equations as that of the differential analysis is first shown for a second order loop. The condition is obtained. Then a closed form third order loop equation in discrete z-domain is derived. Stability and frequency step response of a 3/sup rd/ order 1.25 GHz phase lock loop is examined using the discrete z-domain transfer function. Random jitter performance is predicted, based on noise simulations of individual blocks, and the discrete z-domain transfer functions from each of the PLL sub-blocks to the PLL output. The predicted random jitter is compared against silicon measurements, and shown.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.