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OwnerMohammad Maymandi-Nejad, Manoj Sachdevinventors
Estimating the term…
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.
1) An adjustable temperature coefficient proportion to absolute temperature (PTAT) circuit for providing a load current comprising a first and second current, the load current having a desired temperature coefficient, the PTAT comprising:
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