Power supply induced signal jitter compensation

摘要

Examples of circuits and methods for compensating for power supply induced signal jitter in path elements sensitive to power supply variation. An example includes a signal path coupling an input to an output, the signal path including a delay element having a first delay and a bias-controlled delay element having a second delay. The first delay of the delay element exhibits a first response to changes in power applied thereto and the second delay of the bias-controlled delay element exhibits a second response to changes in the power applied such that the second response compensates at least in part for the first response.

主权项

1. An apparatus, comprising:
a delay element having a delay, wherein the delay element exhibits a change in the delay of the delay element responsive to a change in power applied to the delay element; and a bias-controlled delay element, the bias-controlled delay element configured to exhibit an increased drive strength to increase the delay of the delay element and exhibit a decreased drive strength to decrease the delay of the delay element to compensate for the change in the delay exhibited by the delay element responsive to the change in the power applied to the delay element.