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:
Mar. 29, 2005
Filed:
Apr. 19, 2001
Eric M. Hildebrant, Watertown, MA (US);
Paul A. Ward, Roslindale, MA (US);
Robert A. Bousquet, Somerville, MA (US);
Shida Iep Martinez, Andover, MA (US);
Harold Ralph Haley, Reading, MA (US);
Eric M. Hildebrant, Watertown, MA (US);
Paul A. Ward, Roslindale, MA (US);
Robert A. Bousquet, Somerville, MA (US);
Shida Iep Martinez, Andover, MA (US);
Harold Ralph Haley, Reading, MA (US);
Charles Stark Draper Laboratory, Inc., Cambridge, MA (US);
Abstract
A fully integrated charge amplifier with DC stabilization includes a first amplifier having an input terminal and an output terminal, a first capacitor coupled between the input terminal and the output terminal of the first amplifier, a transimpedance amplifier having an input terminal coupled to the output terminal of the first amplifier and an output terminal, and an impedance device coupled between the input terminal of the first amplifier and the output terminal of the second amplifier. The impedance device has a resistance of at least 1 MΩ.