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:
Jan. 18, 2005
Filed:
Jul. 07, 2003
Joseph Walsh, Pocatello, ID (US);
Stan Latimer, Pocatello, ID (US);
Joseph Walsh, Pocatello, ID (US);
Stan Latimer, Pocatello, ID (US);
AMI Semiconductor, Inc., Pocatello, ID (US);
Abstract
A dual differential-input operational amplifier that includes six PMOSFETs having their source terminals coupled to a high voltage. A seventh and eighth PMOSFET have their source terminals coupled to a current source. Four NMOSFETs have their source terminals coupled to a low voltage. A fifth and sixth NMOSFET have their source terminals coupled to a current sink. The various PMOSFETs and NMOSFETs are coupled together such that the gate terminals of the fifth NMOSFET and eighth PMOSFET receive a first input of the differential input, and such that the gate terminals of the sixth NMOSFET and the seventh PMOSFET receive a second input of the differential input. The operational amplifier may be vertically inverted, or implemented by bipolar transistors, with cascoding devices, and with a second stage in the form of an inverter.