公开(公告)号：DE10142011B4

公开(公告)日：2005-12-29

申请号：DE10142011

申请日：2001-08-28

Applicant: INFINEON TECHNOLOGIES AG

Inventor： SCHWARZ MICHAEL ,  SAMEC CHRISTIAN ,  DREXEL WERNER ,  ZWEIMUELLER GERHARD

IPC: G01R19/165 ,  G01R15/04 ,  G01R15/08 ,  G01R35/00

公开(公告)号：DE10142011A1

公开(公告)日：2003-04-03

申请号：DE10142011

申请日：2001-08-28

Applicant: INFINEON TECHNOLOGIES AG

Inventor： SCHWARZ MICHAEL ,  SAMEC CHRISTIAN ,  DREXEL WERNER ,  ZWEIMUELLER GERHARD

IPC: G01R19/165 ,  G01R15/04

Abstract: The invention relates to a voltage sensor for monitoring a supply voltage, which is applied to a supply potential connection, at an upper and lower limit value. The voltage sensor comprises the following components: a first comparison means that compares the supply voltage at the lower limit value to a first reference voltage value by means of evaluation and outputs a first signal when this lower limit value is fallen below of; a second comparison means which compares the supply voltage at the upper limit value with a second reference voltage by means of evaluation and outputs a second signal when this upper limit value is exceeded, and; a calibrating means that is coupled to the first and second comparison means and enables the first and second comparison means to be calibrated by increasing or decreasing the supply voltage to be evaluated. The invention provides that the calibration is carried out after the manufacture of each circuit arrangement. The configuration of the voltage sensor is stored in a non-volatile memory. The voltage sensor is reconfigured each time a circuit arrangement containing the inventive voltage sensor is activated.