Patent Number: 9,743,203

Title: High-voltage reset MEMS microphone network and method of detecting defects thereof

Abstract: A method of detecting defects in a high impedance network of a MEMs microphone sensor interface circuit. The method includes adding a high-voltage reset switch to a high-voltage high impedance network, closing the high-voltage reset switch during a start-up phase of the MEMs microphone sensor interface circuit, simultaneously closing a low-voltage reset switch of a low-voltage high impedance network during the start-up phase, simultaneously opening the high-voltage reset switch and the low-voltage reset switch at the end of the start-up phase, and detecting a defect in the high-voltage high impedance network or the low-voltage high impedance network immediately after opening the high-voltage reset switch and the low-voltage reset switch.

Inventors: Zeleznik; Matthew A. (Pittsburgh, PA)

Assignee: Robert Bosch GmbH

International Classification: G01R 31/12 (20060101); H04R 29/00 (20060101); H04R 19/04 (20060101); G01R 31/02 (20060101); H04R 19/00 (20060101); H04R 3/00 (20060101)

Expiration Date: 2021-08-22 0:00:00