Patent ID: 11959938
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. The apparatus for testing power supply noise of claim 9, wherein the test board is further disposed with a plurality of welding spot arrays corresponding to the plurality of pad arrays on the package substrate, and each of the plurality of welding spot arrays at least comprises power supply welding spots;
wherein power supply welding spots belonging to the first power supply type in the plurality of welding spot arrays are divided into a first test welding spot and a first power supply welding spot set, each of power supply welding spots in the first power supply welding spot set is electrically connected to a respective one of the power supply pads in the first power supply pad set, and all the power supply welding spots in the first power supply welding spot set are electrically connected together to form a first power supply network, and
wherein the first test welding spot is independent of the first power supply network.