Open AccessWien bridge‐based calibration circuit for CDR applications
Author(s) -
Tavernier F.,
Moreira P.,
Poltorak K.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.1925
Subject(s) - calibration , bridge (graph theory) , electronic engineering , computer science , electrical engineering , engineering , physics , medicine , quantum mechanics
A robust and fully integrated solution to calibrate the voltage controlled oscillator frequency to the data rate frequency in a clock and data recovery is described. As such, no external reference frequency or a separate reference phase‐locked loop is required. The proposed calibration circuit has been designed in a 130 nm CMOS technology. It shows a very low temperature dependency below 100 ppm °C −1 .