Oscillators – Ring oscillators
Patent
1996-06-03
1997-06-03
Grimm, Siegfried H.
Oscillators
Ring oscillators
331115, 331132, 331135, 331177R, H03B 500
Patent
active
056358792
ABSTRACT:
A monolithic CMOS phase-lock loop (PLL) circuit provides a high frequency of operation suitable for RF applications. The PLL produces an output clock with high spectral purity and very low jitter. The output clock has a low static phase error relative to a reference input, making the PLL also useful for clock synchronizing applications, such as clock recovery elements in transmission/recycling channels. The PLL provides in-phase and quadrature signals from a VCO which has two differential transconductor stages having negative output conductance.
REFERENCES:
patent: 5117205 (1992-05-01), Nauta
Sutardja Pantas
Sutardja Sehat
Grimm Siegfried H.
Marvell Technology Group Ltd.
Smith Albert C.
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