Patent ID: 7960982
Filing Date: 2011-06-14
Classification: G01R

Abstract:
1. A method of current testing semiconductor drivers; comprising: a) forming driver circuits on a semiconductor device, comprising CMOS circuits, each driver circuit comprising an NMOS transistor connected in series with a PMOS transistor between a first and a second power supply pad of said semiconductor device; b) connecting a tester to said semiconductor device, whereby a first power supply lead of said tester is connected to the first power pad and a second power supply lead of said tester is connected to the second power pad, wherein current flow to said driver circuits is measured by a current monitor located in said first power supply lead; c) selecting the NMOS transistor, selecting a first load device in parallel with said PMOS transistor and measuring current flow through said NMOS transistor with said current monitor; and d) selecting the PMOS transistor, selecting a second load device in parallel with said NMOS transistor and measuring current flow through said PMOS transistor with said current monitor.