Current source with adjustable temperature coefficient

Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...

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323907, G05F 326

Patent

active

046045686

ABSTRACT:
In a circuit arrangement for providing a current having a controllable temperature coefficient of current, a diffused resistor (334) is used to set up a reference current in a current source (40) which has a temperature coefficient dependent upon the diffused resistor. A current mirror (352, 354, 356) receives the reference current and passes a portion of it through an ion implanted resistor (360). The output current has a temperature coefficient which is a function of the original temperature coefficient of current and a nonzero algebraic multiple of the temperature coefficient of the implanted resistor. By appropriate selection of the resistor values and types, the temperature coefficient of the output current can be set to any desired value.

REFERENCES:
patent: 3480835 (1969-11-01), Richman
patent: 3619659 (1969-11-01), Meyer et al.
patent: 3868581 (1975-02-01), Ahmed
patent: 3908162 (1975-09-01), Marley et al.
patent: 4207538 (1980-06-01), Goel
patent: 4238738 (1980-12-01), Komori
patent: 4243948 (1981-01-01), Schade, Jr.
patent: 4249123 (1981-02-01), Kwan
patent: 4260956 (1981-04-01), Harford
patent: 4287439 (1981-09-01), Leuschner
patent: 4323854 (1982-04-01), Hester
patent: 4325017 (1982-04-01), Schade
patent: 4350904 (1982-09-01), Cordell
patent: 4380728 (1983-04-01), Kearney
patent: 4419594 (1983-12-01), Gemmell et al.
patent: 4424461 (1984-01-01), Taguchi et al.
patent: 4438411 (1984-03-01), Rubin et al.
patent: 4472675 (1984-09-01), Shinomiya
patent: 4490669 (1984-12-01), Wilhelm

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