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Techniques for automatic on chip closed loop transfer function monitoring for embedded charge pump phase locked loops.

Burbidge, Martin J. and Tijou, Jim and Richardson, Andrew M. D. (2003) Techniques for automatic on chip closed loop transfer function monitoring for embedded charge pump phase locked loops. In: Design, Automation and Test in Europe Conference and Exhibition, 2003. UNSPECIFIED, pp. 496-501. ISBN 0-7695-1870-2

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    Abstract

    Charge Pump Phase locked loops are used in a variety of applications, including on chip clock synthesis, symbol timing recovery for serial data streams, and generation of frequency agile high frequency carrier signals. In many applications PLLs are embedded into larger digital systems, in consequence, analogue test access is often limited. Test motivation is thus towards methods that can either aid digital only test of the PLL, or alternatively facilitate complete self testing of the PLL. One useful characterisation technique used by PLL designers is that of closed loop phase transfer function measurement. This test allows, an estimation of the PLL's natural frequency, damping, and 3 dB bandwidth to be made from the magnitude and phase response plots. These parameters relate directly to the time domain response of the PLL and will indicate errors in the PLL circuitry. This paper provides suggestions towards test methods that use a novel maximum frequency detection technique to aid automatic measurement of the closed loop phase transfer function. In addition, techniques presented have potential for full BIST applications.

    Item Type: Contribution in Book/Report/Proceedings
    Additional Information: "©2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE." "This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder."
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    Departments: Faculty of Science and Technology > Engineering
    ID Code: 20160
    Deposited By: ep_ss_importer
    Deposited On: 16 Dec 2008 13:41
    Refereed?: No
    Published?: Published
    Last Modified: 24 Jan 2014 05:56
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/20160

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