Patent ID: 7400995
Filing Date: 2008-07-15
Classification: G01R

Abstract:
1. A test device for testing integrated circuits, including dynamic AD converters, the test device comprising: a precision signal generator, configured for generating a test signal and coupled to an input contact for coupling to an input of an integrated circuit; at least one reference signal generator configured for generating a reference signal the reference signal generator having a calibration line and a reference line; and at least one comparator unit for the input contact, the comparator unit being connected to the calibration line and to the reference line of the reference signal generator and having a calibration unit, the comparator unit being operable in a test mode and being configured such that the test signal is compared with the reference signal and that the precision signal generator can be turned off by the comparator unit if the test signal exceeds or falls below the reference signal; the comparator unit also being operable in a calibration mode configured such that the switching properties of the comparator unit are adjustable by the calibration unit by means of the signal values of the calibration line which are present at the comparator unit and by means of the reference line.