Temperature-independent current source circuit

Details Temperature-independent current source circuit Temperature-independent current source circuit

2006-06-05

2008-11-18

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S575000

Reexamination Certificate

active

07453314

ABSTRACT:
A temperature-independent current source is provided, which includes a current source generating a current that is proportional to the temperature and a current source generating a current that is inversely proportional to the temperature. Values of the circuit elements are selected so that the currents of the current sources add up to a substantially temperature-independent current. Related current sources utilize dual-base Darlington bipolar transistors to generate a temperature-independent current.

REFERENCES:
patent: 4467289 (1984-08-01), Okada
patent: 4639684 (1987-01-01), Laude
patent: 4687984 (1987-08-01), Butler
patent: 5675243 (1997-10-01), Kamata
patent: 5859568 (1999-01-01), Le et al.
patent: 7057442 (2006-06-01), Hwang et al.

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