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, 2005
Filed:
Apr. 17, 2003
Eric John Lukes, Stewartville, MN (US);
Patrick Lee Rosno, Rochester, MN (US);
James David Strom, Rochester, MN (US);
Dana Marie Woeste, Mantorville, MN (US);
Eric John Lukes, Stewartville, MN (US);
Patrick Lee Rosno, Rochester, MN (US);
James David Strom, Rochester, MN (US);
Dana Marie Woeste, Mantorville, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and a low voltage, complementary metal oxide semiconductor (CMOS) circuit are provided for generating voltage and current references with a low voltage power supply. A voltage generating circuit provides a voltage reference and is formed by a plurality of CMOS transistors and a resistor. An operational amplifier includes a differential pair of CMOS transistors. The first voltage reference is applied to an input of the differential pair of transistors and an output of the differential pair of transistors providing a second voltage reference. The operational amplifier includes a plurality of current reference transistors. A first voltage generating circuit generates a first voltage and a second voltage generating circuit generating a second voltage. The first and second voltage generating circuits are formed by a plurality of CMOS transistors. The generated first and second voltages are applied to the voltage reference generating circuit and current reference transistors.