High Gain Detector Techniques for High Bandwidth Low Noise Phase-Locked Loops
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United States of America Patent
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Issued Date -
Feb 1, 2024
app pub date -
Oct 9, 2023
filing date -
Jan 12, 2021
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Abstract
In described examples, a phase measurement circuit includes a first switch coupled between a power terminal and a phase measurement output, the first switch having a first switch control terminal coupled to an up input. The phase measurement circuit includes a second switch coupled between the phase measurement output, the second switch having a second switch control terminal coupled to a down input. The phase measurement circuit includes a first capacitor coupled between the power terminal and the phase measurement output, a second capacitor coupled between the phase measurement output and a ground terminal, and a charge pump circuit having a first control input, a second control input, and a charge pump output, the first control input coupled to the up input, the second control input coupled to the down input, and the charge pump output coupled to the phase measurement output.
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