Module, system and method for testing a phase locked loop

Details Module, system and method for testing a phase locked loop Module, system and method for testing a phase locked loop

2006-04-04

2006-04-04

Nguyen, Vincent Q. (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

C375S376000

Reexamination Certificate

active

07023195

ABSTRACT:
A digital test module (5) is provided for testing a phase locked loop circuit. The module (5) includes phase detection circuitry (10) for performing phase measurements of the phase locked loop circuit and analog test circuitry (20) for testing at least one analog element of the phase locked loop circuit. Frequency measurement circuitry (30) is provided for performing frequency measurements of the phase locked loop circuit, as is circuitry (40) for performing calibration and jitter measurements. In this way cycle-to-cycle and phase jitter measurements may be made. A calibration mechanism is provided allowing a process evaluation to be made and which allows the jitter data to be provided in a few seconds. The fully digital design facilitates easy manufacture and ready retargeting of the module to diverse applications and processes.

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