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:
Feb. 22, 2000
Filed:
May. 14, 1997
Takeshi Suyama, Yokohama, JP;
Shoichi Iwamoto, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
Five voltage dividing resistors are connected in series between the nodes of external power supply voltages to obtain first to fourth divided voltages. A first power amplifier of an Ntop type for impedance conversion is connected to a node of the first voltage. A second power amplifier of a Ptop type for impedance conversion is connected to a node of the second voltage. A third power amplifier of the Ntop type for impedance conversion is connected to a node of the third voltage. A fourth power amplifier of the Ptop type for impedance conversion is connected to a node of the fourth voltage. In each of the first and third power amplifiers of the Ntop type, the ability of causing a current to flow out of the amplifier from the output terminal is set to be high, and the ability of causing a current to flow into the amplifier from the output terminal is set to be low. In each of the second and fourth power amplifiers of the Ptop type, the ability of causing a current to flow into the amplifier from the output terminal is set to be high, and the ability of causing a current to flow out of the amplifier from the output terminal is set to be low.