Method and device for temperature dependent current generation

Details Method and device for temperature dependent current generation Method and device for temperature dependent current generation

1997-04-29

1999-08-24

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

323309, 323313, G05F 320, G05F 316

Patent

active

059428880

ABSTRACT:
Most temperature related reference generations are in the voltage domain, which means that reference voltages rather than reference currents are generated. In some applications such as driving laser diodes, currents are needed rather than voltages. In the present invention, as an alternative, the references are designed in the current domain, wherein the operation philosopy can be said to be inverse to the operation philosopy of the prior art. The temperature dependence of the currents are known and the currents (1, 2) will be processed by linear and/or non linear operation to generate currents (3) with predetermined temperature coefficients. The advantages of the invention can be outlined as more straight forward, scaling and summation (subtraction) are much easier and simpler in the current domain than in the voltage domain.

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patent: 5627456 (1997-05-01), Novof et al.
CMOS Analog Circuit Design, Allen, Phillip E. et al., Holt, Rinehart and Winston Inc., 1987, 6 pages referencing .sctn. 11.1.
Analysis and Design of Analog Integrated Circuits, Gray, Paul R. et al., 3rd Ed. John Wiley & Sons, Inc., 1993, pp. 338-345.

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