Apparatus and method for generating a temperature...

Telecommunications – Transmitter – Power control – power supply – or bias voltage supply

Reexamination Certificate

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C455S169100, C455S289000, C455S298000, C455S299000, C323S312000

Reexamination Certificate

active

07110729

ABSTRACT:
A constant current source for generating a constant reference current that is relatively temperature insensitive. The constant current source comprises: i) first circuitry for generating a first output current that increases with increases in temperature; ii) second circuitry for generating a second output current that decreases with increases in temperature; and iii) a current combiner circuit that combines the first and second output currents to thereby generate the constant reference current. A change in the first output current caused by a temperature change is at least partially offset by a change in the second output current caused by the temperature change.

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patent: 5956627 (1999-09-01), Goos
patent: 6087820 (2000-07-01), Houghton et al.
patent: 6265857 (2001-07-01), Demsky et al.
patent: 6377825 (2002-04-01), Kennedy et al.

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