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:
May. 15, 2007
Filed:
Aug. 02, 2004
Applicant:
Terence J. Murphy, Plano, TX (US);
Inventor:
Terence J. Murphy, Plano, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 41/06 (2006.01); H01L 41/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An integrated circuit () provides drive signals to a piezo element () of a milli-actuator device () in a mass data storage device (). The integrated circuit () includes a circuit () for selectively operating the integrated circuit () in either a voltage or a charge mode of operation. A first amplifier circuit () can be compensated for a variable number of piezo elements in the charge mode of operation by adjustable output impedance adjusting elements () that are switchably connectable into the amplifier circuit ().