| 摘要 |
PROBLEM TO BE SOLVED: To execute an entire inspection of an entire A/D converter and a partial inspection of the A/D converter.SOLUTION: An A/D converter inspection apparatus includes: a signal output section 22 for outputting an inspectional analog signal Ste and an inspectional digital signal Dte (inspectional signals); and a processing section 24 for executing an entire inspection process of computing a characteristic value Dcha1 (overflow occurrence frequency and noise floor level) of an entire A/D converter 1 on the basis of a digital signal D2 (inspection output signal) output from a digital filter section 4 upon the input of the inspectional analog signal Ste to an analog signal adjustment section 2, and inspecting the entire A/D converter 1 on the basis of the computed characteristic value Dcha1, and a partial inspection process of inspecting one component (one of analog signal adjustment section 2, &Dgr;&Sgr; modulation section 3 and digital filter section 4) on the basis of an inspection output signal that is a signal output from the one component upon the input of the inspectional signals to the one component. |
