Patent ID: 7629809
Filing Date: 2009-12-08
Classification: G01R

Abstract:
1. An IC tester for testing a device under test, comprising an analog test module for testing an analog signal against the device under test, mounted in a test head, said analog test module comprising: a main substrate, the front end thereof being electrically connected to the device under test; a first sub-substrate provided so as to be parallel with a plane of the main substrate, and connected to the main substrate via connectors disposed on the front side and the rear side thereof, respectively, the first sub-substrate comprising first analog circuits provided on respective surfaces of the front half region thereof, and first digital circuits provided on respective surfaces of the rear half region thereof, and electrically connected to the first analog circuits, respectively, wherein an analog test is conducted by the first analog circuits, and the first digital circuits; and a second sub-substrate provided on a plane of the main substrate, on a side thereof, opposite from the first sub-substrate, so as to be parallel with the plane of the main substrate, and connected to the main substrate via connectors disposed on the front side and the rear side thereof, respectively, the second sub-substrate comprising second analog circuits provided on respective surfaces of the front half region thereof, and second digital circuits provided on respective surfaces of the rear half region thereof, and electrically connected to the second analog circuits, respectively, wherein an analog test is conducted by the second analog circuits, and the second digital circuits.