Adjustable and programmable temperature coefficient -...

Details Adjustable and programmable temperature coefficient -... Adjustable and programmable temperature coefficient -...

H - Electricity

01

L

H01L 23/34 (2006.01) G05F 3/02 (2006.01) H03H 11/54 (2006.01)

Patent

CA 2513956

An adjustable PTAT provides a load current comprising at least a first and second current. The load current has a desired temperature coefficient and the PTAT comprises at least two transistor groups. The first transistor group provides the first current having a negative temperature coefficient. Modification to the first transistor group results in a change in the temperature coefficient without affecting the value of the first current. The second transistor group provides the second current having a positive temperature coefficient, wherein modification to the second transistor group results in a change in the temperature coefficient without affecting the value of the second current. The temperature coefficient of the load current is determined by adjusting the temperature coefficient of one or both of the first and second transistor groups.

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