By Topic

Write pulse Generator for 16x DVD recording with symmetric CMOS inverter ring oscillator

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
U. Karthaus ; Atmel, Ulm, Germany ; S. Schabel

This paper reports the design and measurement results of a write pulse generator IC for rewritable CD and DVD disk drives implemented in a standard digital 0.35 μm CMOS technology. The chip is the interface between a processor and a laser driver. It provides accurate timing signals to the laser driver via a four-level differential current interface. Transitions between current levels are programmable with 149 ps resolution at a data rate of 420 Mb/s, corresponding to 16x DVD write speed. The chip includes a digital core managing the different write strategies, a CMOS serial interface to the processor for programming, a low power, low phase noise, 64-phase ring voltage-controlled oscillator (VCO) based on CMOS inverters, a phase-locked loop (PLL) locking the VCO to the system clock, and a current interface to the laser driver. The PLL phase noise is -144 dBc/Hz at 10 MHz offset from the 105 MHz carrier. At this frequency, the rms jitter is 1.1 ps with 0.8 mA VCO core supply current. The chip is fully ESD protected.

Published in:

IEEE Journal of Solid-State Circuits  (Volume:40 ,  Issue: 11 )