Circuit for measuring the dynamic characteristics of a package for high-speed integrated circuits and a method for measuring said dynamic characteristics

A method of measurement for measuring the coupling coefficient C.sub.E/S between an input connection which is adjacent to an output connection of a package to be used to encapsulate an integrated circuit, comprising the steps of:

• leaving a first amplifier of a measuring circuit unconnected at the output of said first amplifier;
• connecting a second amplifier which is parallel to the first amplifier to one input connection and to one output connection of the package;
• sending a signal (V.sub.e) to the input connection of the first amplifier;
• obtaining an output signal (V.sub.S) on the second amplifier equal to:
• V.sub.s =C.sub.E/E .multidot.A.multidot.V.sub.e .multidot.T
• whence C.sub.E/E =(1/A.multidot.T).multidot.(V.sub.s /V.sub.e);
• leaving the first amplifier disconnected at its output;
• leaving the second amplifier which is antiparallel with the first amplifier disconnected at its input;
• sending a signal (V.sub.e) to the input connection of the first amplifier;
• obtaining an output signal (V.sub.S) on the second amplifier equal to:
• V.sub.S =C.sub.E/S .multidot.V.sub.e
• whence C.sub.E/S =V.sub.S /V.sub.e.

A method of measurement for measuring the coupling coefficient C.sub.S/E between an output connection adjacent to an input connection of a package to be used to encapsulate an integrated circuit, comprising the steps of:

• leaving a first amplifier of a measuring circuit unconnected at the output of said first amplifier;
• connecting a second amplifier which is parallel to the first amplifier to one input connection and to one output connection of the package;
• sending a signal (V.sub.e) to the input connection of the first amplifier;
• obtaining an output signal (V.sub.S) on the second amplifier equal to:
• V.sub.S =C.sub.E/E .multidot.A.multidot.V.sub.e .multidot.T
• whence D.sub.E/E =(1/A.multidot.T).multidot.(V.sub.s /V.sub.e);
• connecting the first amplifier at its input and at its output to two package connections;
• connecting the second amplifier at its input and at its output to two other package connections;
• separating the input connection of the first amplifier and the output connection of the second amplifier by a screen;
• sending a signal (V.sub.e1) to the input connection of the first amplifier;
• obtaining the output signal (V.sub.S2) on the second amplifier equal to:
• V.sub.S2 =V.sub.S/2 .multidot.V.sub.S1
• whence C.sub.S/E =1/(A.sup.2 T.sup.2).multidot.(V.sub.S2 V.sub.e1).