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:
Dec. 21, 1999
Filed:
Jul. 30, 1998
Iuri Mehr, North Andover, MA (US);
Paul F Ferguson, North Andover, MA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A method and system for high bandwidth, high gain offset compensation in a read channel integrated circuit includes zeroing the analog read signal applied to the signal path at a first location in the read channel integrated circuit path prior to a first amplifier which has a first gain and a first bandwidth magnitude characteristic with a high frequency boost; coupling a signal from the first amplifier to a second amplifier which has a second gain larger than the first and a second bandwidth magnitude characteristic having high frequency roll-off; and further coupling the signal further from the second amplifier to a storage device and feeding back the signal stored in the storage device to the first amplifier to apply the high frequency boost of the first bandwidth magnitude characteristic to compensate for the high frequency roll-off of the second bandwidth magnitude characteristic; decoupling the signal from the storage device and removing the zeroing of the analog read signal applied to the signal path.