Power cleanliness and clock jitter are connected because high-speed clocks can be sensitive to the quality of the power they receive. Clock jitter can interfere with the performance of digital circuits, including high-speed ADCs, but the supplied information does not establish a universal numerical relationship between power conditions and jitter.
For applications that depend on clock timing, the practical takeaway is to treat power quality as a relevant consideration rather than an isolated power-supply detail. The relationship must be quantified carefully for the specific clock and application involved.
Summary: Clock jitter can affect digital-circuit performance. High-speed ADCs are identified as a sensitive use case. High-speed clocks can be sensitive to power cleanliness. Quantifying the power-to-jitter relationship takes effort.
What is the connection between power cleanliness and clock jitter?
High-speed clocks can be sensitive to the “cleanliness” of the power they receive, and clock jitter is a concern because it can interfere with digital-circuit performance. The available information presents power quality as one factor relevant to clock behavior, especially where timing sensitivity matters.
This does not mean that every power condition will produce the same jitter result. The relationship requires quantification, so it should be evaluated in the context of the particular clock and circuit rather than assumed from a general statement.
Why does clock jitter matter in digital circuits?
Clock jitter matters because it can interfere with the performance of digital circuits. The source specifically identifies high-speed ADCs among the circuits for which this interference is relevant.
A clock is therefore not only a timing source to consider on its own. Where a circuit relies on high-speed clock operation, jitter performance is part of the wider system-performance discussion described by the source.
Are high-speed ADCs the only circuits affected by clock jitter?
No. High-speed ADCs are a named example, while the stated impact of clock jitter applies more broadly to digital circuits. The supplied information does not list additional circuit types or rank their sensitivity.
The distinction is useful when interpreting the claim: high-speed ADCs are specifically highlighted, but they should not be read as the only digital application for which clock jitter can matter. Any more detailed application-specific conclusion would require information not provided here.
What does “clean” power mean for a high-speed clock?
In the supplied material, “cleanliness” refers to the quality of the power received by a high-speed clock. The source does not define that term with a measurement, threshold, test condition, or specific power-supply characteristic.
Accordingly, it is appropriate to use the phrase as a design consideration, not as a pass/fail specification. A claim that a given supply is sufficiently clean would need application-specific quantification that is not included in the available data.
Can the effect of power quality on clock jitter be stated as a fixed number?
No fixed value is provided. The source explicitly indicates that quantifying the relationship between power cleanliness and high-speed clock behavior takes effort.
This means the information supports a cautious conclusion: power quality may be relevant to jitter performance, but a numerical prediction cannot be drawn from the general relationship alone. No jitter limit, power limit, conversion factor, or performance guarantee is stated.
Which parts of a system are involved in this clock-jitter discussion?
The discussion involves clocks, digital circuits, high-speed ADCs, and power supplies. Clock, ADC, and power-supply manufacturers are all identified as having a current focus on clock-jitter performance.
| System element | Role described in the available information |
|---|---|
| High-speed clock | Can be sensitive to the cleanliness of its received power. |
| Clock jitter | Can interfere with digital-circuit performance. |
| Digital circuit | May experience performance interference from clock jitter. |
| High-speed ADC | A specifically named example of a digital circuit affected by clock jitter. |
| Power supply | Relevant because power cleanliness can matter to high-speed clocks. |
What is the most defensible design conclusion from the available information?
The defensible conclusion is that power cleanliness should be considered when evaluating high-speed clock jitter, particularly in digital systems that include high-speed ADCs. It is also important not to overstate the evidence: the available information establishes relevance, not a specific level of impact.
When a clock-sensitive application is being assessed, the power-to-jitter relationship needs careful quantification for that application. This keeps the focus on the stated concern—clock jitter and digital performance—without assuming unsupported specifications or outcomes.
