Patent ID: 6927592
Filing Date: 2005-08-09
Classification: G01R

Abstract:
1. A device for measuring the supply current (I DDQ ) to an electronic device under test DUT, which is powered by a supply voltage (V DUT ), said measuring device being placed in a supply line between said supply voltage and said device under test, said measuring device comprising a current measuring unit CMU, a currant bypass unit or CBU in parallel in said CMU, said CBU comprising a power MOSEET in the path between said supply voltage (V DUT ) and said DUT, said CBU further comprising means to receive a clock signal, being a succession of high and low states, said CBU comprising two transistors connected by a series connection, which receive said clock signal at their gates or bases, the gate of said MOSFET being connected to said series connection, wherein a connection is present between one terminal other than the gate or base of one of said transistors in series, and the source of said MOSFET.