Integrated circuit having an on chip thermal circuit requiring o

Details Integrated circuit having an on chip thermal circuit requiring o Integrated circuit having an on chip thermal circuit requiring o

1994-08-29

1995-12-19

Ngo, Ngan V.

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

Temperature

257776, 257777, 338 22R, 338 22SD, H01L 31058, H01L 2348

Patent

active

054770769

ABSTRACT:
An integrated circuit implements an on chip thermal circuit (12) for measuring temperature of an operating integrated circuit die (10) by requiring only one dedicated integrated circuit pin (16). A second integrated circuit pin (18) is utilized but is also connected directly connected to other circuitry (14) on the integrated circuit and is used by the other circuitry at the same time that the integrated circuit die temperature is being measured. In one form, the second integrated circuit pin is a ground terminal. Error voltages coupled to the ground terminal may be removed from the temperature calculation by an external differential amplifier (24).

REFERENCES:
patent: 5140394 (1992-08-01), Cobb, III et al.
patent: 5141334 (1992-08-01), Castles
patent: 5213416 (1993-05-01), Neely et al.
patent: 5230564 (1993-07-01), Bartilson et al.
patent: 5376819 (1994-12-01), Gay et al.

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