Method and apparatus for zero temperature coefficient reference

Details Method and apparatus for zero temperature coefficient reference Method and apparatus for zero temperature coefficient reference

1991-06-03

1992-11-17

Howell, Janice A.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307308, 307318, 307310, H03K 326, H03K 1908

Patent

active

051646153

ABSTRACT:
A reference voltage device that consists of a series combination of reverse biased p-n junctions, forward biased p-n junctions, and Schottky hot carrier diodes. The relatively low voltage and low negative temperature coefficient of Schottky diodes permit great flexibility in correcting areas of nonlinearity in the offsetting temperature dependent characteristics of conventional forward biased junctions and zener diodes. Because of the stability of Schottky hot carrier diodes to radiation, the method and apparatus of this invention are particularly suitable for designing radiation hardened reference diodes, as well. Finally, the Schottky forward biased diode is suitable for integration into a single monolithic chip structure in series with conventional reverse and forward biased p-n junctions.

REFERENCES:
patent: 3780322 (1973-12-01), Walters
patent: 4249091 (1981-02-01), Yamagiwa
patent: 4300149 (1981-11-01), Howard et al.
patent: 4403399 (1983-09-01), Taylor
patent: 4948989 (1990-09-01), Spratt

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