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:
Oct. 23, 2012
Filed:
May. 19, 2008
Michael Deruginsky, Hillerod, DK;
Claus Erdmann Fuerst, Roskilde, DK;
Mohammad Shajaan, Vaerlose, DK;
Daifi Sassene, Vaerlose, DK;
Michael Deruginsky, Hillerod, DK;
Claus Erdmann Fuerst, Roskilde, DK;
Mohammad Shajaan, Vaerlose, DK;
Daifi Sassene, Vaerlose, DK;
Analog Devices, Inc., Norwood, MA (US);
Abstract
An integrated circuit configured to provide a microphone output signal, comprising: a preamplifier coupled to receive an input signal, generated by either a first microphone member or a second microphone member, where one of the members is movable relative to the other microphone member; a voltage pump to output a pumped voltage; and a low-pass filter coupled to filter the pumped voltage from the voltage pump and to provide a bias voltage to either microphone member.