Oscillator with improved parameters variation tolerance

Oscillators – Ring oscillators

Reexamination Certificate

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C331S034000, C331S17700V, C327S256000, C327S257000

Reexamination Certificate

active

06965273

ABSTRACT:
A design for an inverting delay component of an oscillator is disclosed, which enables the oscillator to be more tolerant of parameter variations. This increased parameter variation tolerance allows the KVCOof the oscillator to vary less between the worst case scenario (where the components of the oscillator meet minimum specifications) and the best case scenario (where the components meet the maximum specifications). This in turn means that the worst case KVCOvalue will be significantly smaller than in the prior art. By using a significantly smaller KVCOvalue, the jitter experienced at the output of the oscillator will be substantially reduced. Thus, this design enables a low-jitter oscillator to be realized.

REFERENCES:
patent: 4939390 (1990-07-01), Coe
patent: 5418498 (1995-05-01), DeVito et al.
patent: 6043719 (2000-03-01), Lin et al.

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