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:
Jun. 19, 2001
Filed:
Nov. 10, 1999
Applicant:
Inventor:
Stuart W. Pullen, Raleigh, NC (US);
Assignee:
Intersil Corporation, Palm Bay, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/38 ;
U.S. Cl.
CPC ...
H03F 3/38 ;
Abstract
A high Q low pass filter removes the carrier from a Class D amplifier. Speaker impedance varies with frequency, and it is desirable for to drive 2, 4 and 8 ohm speakers. The bandwidth feedback compensation network,adds a pole-zero combination to the feedback loop to reduce the Q of the low pass filter and to maintain the bandwidth of the amplifier.