Custom 2-Pole PLL

This paper provides an overview of the 2nd order custom PLL, and explains how it can be applied for increased jitter measurement accuracy of serial data waveforms.
Custom 2-Pole PLL TECHNICAL BRIEF



Mike Hertz,
Field Applications Engineer Jitter is defined as the timing uncertainty of an edge. In order to determine
Michael Schnecker, the timing uncertainty of a serial data signal edge, this edge must be
Business Development Mgr compared to a reference clock edge.
Sept 21, 2008
For most high speed serial data standards, the reference clock is
Summary
embedded within the serial data signal, and must be recovered from the
This paper provides an signal under test. The method used for recovering the clock directly
overview of the 2nd order impacts jitter.
custom PLL, and