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:
Jan. 03, 1989
Filed:
May. 01, 1986
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ; G01D / ;
U.S. Cl.
CPC ...
324 / ; 341120 ;
Abstract
In the A/D converter test method, the square wave pulse as the test signal is supplied to the A/D converter under test; said pulse is converted into the digital signal by said A/D converter; the waveform of said square wave pulse is reconstructed by converting the digital signal outputted from said A/D converter into the analog signal; the rise time of said A/D converter under test is measured from the reconstructed waveform of said square wave pulse; and the dynamic characteristics of said A/D converter is calculated from the measured rise time.