By Topic

A 5.4mW 0.0035mm2 0.48psrms-jitter 0.8-to-5GHz non-PLL/DLL all-digital phase generator/rotator in 45nm SOI CMOS

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
$31 $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

7 Author(s)
Kyu-hyoun Kim ; IBM T.J. Watson Res. Center, Yorktown Heights, NY ; Dreps, D.M. ; Ferraiolo, F.D. ; Coteus, P.W.
more authors

A CDR circuit for serial link receivers usually requires a multi-phase generator and a number of phase rotators to produce data and edge clocks. The most commonly used architecture is a dual-loop CDR where a DLL (or PLL) generates k equidistantly spaced clock phases that are fed into n/2 phase rotators, where n is the number of sampling latches in the CDR. Another method was proposed, where the multi-phase generation and phase shifting is achieved at the same time in a single PLL, in this case achieving phase-adjustment capability through the weighted summing of charge-pump outputs for several phases. This approach eliminates the additional delay associated with using phase rotators and simplifies the overall design. However, all these conventional methods require either a PLL or a DLL, blocks that demand the largest share of power consumption and of silicon area in the CDR circuit. An alternate approach to implementing a phase generator and rotator is described in this paper, with the basic design concept of this approach is also illustrated.

Published in:

Solid-State Circuits Conference - Digest of Technical Papers, 2009. ISSCC 2009. IEEE International

Date of Conference:

8-12 Feb. 2009