专利名称：Apparatus and methods for phase-locked
loop oscillator calibration and lockdetection
发明人：Pål Øyvind Reichelt,Øyvind Janbu申请号：US14169813申请日：20140131公开号：US09240795B2公开日：20160119
专利附图：
摘要：A system and method of calibrating a phase-locked loop (PLL) having at least aphase detector, a frequency divider and a local oscillator are provided. The disclosed
example includes generating a lock window signal based on a feedback signal generatedby the frequency divider where the lock window signal may form an active lock windowrelative to each significant edge of the feedback signal, generating a sampled windowsignal based on samples of the lock window signal at each significant edge of a referencesignal, and estimating a phase offset between the reference signal and the feedbacksignal based on a number of consecutive samples of the sampled window signal that areactive.
申请人：Silicon Laboratories, Inc.
地址：Austin TX US
国籍：US
代理机构：Miller, Matthias & Hull LLP
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