DEVICE FOR DETERMINING THERMAL JUNCTION-TO-CASE RESISTANCE OF LOGIC INTEGRATED MICROCIRCUITS Russian patent published in 2008 - IPC G01R31/317 

FIELD: physics.

SUBSTANCE: invention pertains to control of quality of microcircuits based on TTL and Schottky transistor-transistor logic elements. The microcircuit is heated through stepwise variation of the current through the load on a rule, approximated by a harmonic function. The stepwise current variation in the load of the logic element is achieved using a pulse generator, circulating register, AND circuits, electronic commutators and variable resistors. Approximation is done through a double channel oscilloscope, a generator of harmonic signals with change in the variable resistors. The current collecting resistors, the first commutator and the voltmeter are meant for determining the heating power, while the high resistance resistor, the amplifier, detector and the selective voltmeter are for measuring heat sensitive parameters during strobe pulses.

EFFECT: reduction in deviation.

2 dwg