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:
Aug. 02, 2011
Filed:
May. 06, 2008
Eiji Nishimori, Kasugai, JP;
Eiji Nishimori, Kasugai, JP;
Fujitsu Semiconductor Limited, Yokohama, JP;
Abstract
An input voltage signal VIN to be inputted to a gate terminal of a PMOS transistor Mis converted to a voltage value which was level shifted at the source terminal by an inter-terminal voltage between the gate and source of the PMOS transistor M. This conversion is carried out in accordance with a bias current Iflowing from the constant current source IS through the source terminal of the PMOS transistor M. The voltage thus converted is outputted from a source follower circuit through a capacitative element C. A low-pass filter is constituted of the impedance of the PMOS transistor Mand the capacitative element Cin a signal path extending from the input voltage signal VIN to the source follower circuit.