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. 07, 2006
Filed:
May. 27, 2004
Applicants:
Alberto Bilotti, Buenos Aires, AR;
Hernan D. Romero, Buenos Aires, AR;
Inventors:
Alberto Bilotti, Buenos Aires, AR;
Hernan D. Romero, Buenos Aires, AR;
Assignee:
Allegro Microsystems, Inc., Worcester, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A high pass filter comprising a combination of capacitors and insulated gate field effect transistors (IGFETs) used as effective resistors provides a low break frequency, while providing improved linearity and a stable break frequency over a relatively wide range of input voltages. The high pass filter can be realized with a small physical size. In one particular embodiment, the small physical size allows the capacitors and the IGFET devices to be integrated together onto a common substrate.