Forwarded clock filtering

A tunable bandpass filter to provide a filtered differential clock signal in response to an input differential clock signal, where an embodiment comprises a transistor pair loaded by tunable loads, and a feedback circuit to tune the tunable loads. In some embodiments, the feedback circuit tunes the...

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Bibliographische Detailangaben
1. Verfasser: CASPER BRYAN K.,HOLLIS TIMOTHY,JAUSSI JAMES E.,MOONEY STEPHEN R.,O'MAHONY FRANK,MANSURI MOZHGAN
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A tunable bandpass filter to provide a filtered differential clock signal in response to an input differential clock signal, where an embodiment comprises a transistor pair loaded by tunable loads, and a feedback circuit to tune the tunable loads. In some embodiments, the feedback circuit tunes the loads to maximize a small-signal differential gain. In other embodiments, the feedback circuit tunes the loads to minimize a metric indicative of jitter in the filtered differential clock signal. Other embodiments are described and claimed.