Importance

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Abstract

Differential clock phase imbalance can produce undesirable spurious content at a digital to analog converter output, or interleaving spurs on an analog-to-digital converter output spectrum, or more generally, in interleaving circuit architectures that depend on rising and falling edges of a differential input clock for triggering digital-to-analog conversion or analog-to-digital conversion. A differential phase adjustment approach measures for the phase imbalance and corrects the differential clock input signals used for generating clock signals which drive the digital-to-analog converter or the analog-to-digital converter. The approach can reduce or eliminate this phase imbalance, thereby reducing detrimental effects due to phase imbalance or differential clock skew.

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First Claim