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:
Apr. 01, 2008
Filed:
May. 19, 2005
Yoshihiro Kizaki, Kasugai, JP;
Katsuyuki Yasukouchi, Kasugai, JP;
Hidenobu Ito, Kasugai, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In an input transistor of current mirror circuit, it is intended to prevent the current generated by Early effects from appearing in the output current of the current mirror circuit. Having an Early voltage detectorof same connection and structure as a driver circuit, and connected in parallel to the driver circuit, the current flowing in input transistor Qof the Early voltage detectoris detected. Output current (current IQ) of Early voltage detectoris added to input current (current IQ) of driver circuit. As a result, in input current (current IQ) of current mirror circuit, current α due to Early voltage effects can be canceled. At the same time, current α due to Early voltage effects generated in input transistor Qof current mirror circuitis prevented from appearing in output current (current IQ) of current mirror circuit