EP Patent

EP1246356A1 — Voltage controlled oscillator in a PLL circuit

Assigned to NEC Electronics Corp · Expires 2002-10-02 · 24y expired

What this patent protects

A voltage controlled oscillator includes N (N is an integer equal to or more than 2) inversion-type differential amplifiers (9a to 9d) and a level converter (7). The N (N is an integer equal to or more than 2) inversion-type differential amplifiers are connected in a loop such th…

USPTO Abstract

A voltage controlled oscillator includes N (N is an integer equal to or more than 2) inversion-type differential amplifiers (9a to 9d) and a level converter (7). The N (N is an integer equal to or more than 2) inversion-type differential amplifiers are connected in a loop such that each of output signals outputted from one of the N inversion-type differential amplifiers has an opposite polarity to a corresponding one of output signals outputted from the next one of the N inversion-type differential amplifiers. The level converter is connected to one of the N inversion-type differential amplifiers as a last inversion-type differential amplifier to generate an oscillation signal from the output signals outputted from the last inversion-type differential amplifier. Each of the N inversion-type differential amplifiers operates in response to a predetermined voltage and a control voltage.

Drugs covered by this patent

Patent Metadata

Patent number
EP1246356A1
Jurisdiction
EP
Classification
—
Expires
2002-10-02
Drug substance claim
No
Drug product claim
No
Assignee
NEC Electronics Corp
Source
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Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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