The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 2004
Filed:
Dec. 20, 2002
Nippon Precision Circuits, Tokyo, JP;
Abstract
The first amplifier circuit D is formed by connecting drains of a pair of N-channel MOS transistors forming the first current mirror circuit CM respectively to the drains of P-channel MOS transistors and as a differential input portion, and the second amplifier circuit D is formed by connecting drains of a pair of P-channel MOS transistors forming the second current mirror circuit CM respectively to the drains of N-channel MOS transistors and as a differential amplifier circuit. The first and second differential amplifier circuits D and D can amplify the first and second signals having cycles corresponding with each other with their duty ratios kept unchanged regardless of their operating point potentials. Further, the two outputs are combined into one output to suppress variation of the operating point potential of the output attributable to process-related factors, fluctuation of the power supply potential due to the oscillating operation and the like.