Patent ID: 7768342

Claim:
A current source having a piece-wise linear relationship between current and temperature, the current source comprising: a first current source to provide current based on a first current-temperature relationship; a second current source coupled in parallel to the first current source, the second current source to provide current based on a second current-temperature relationship which is different from said first current-temperature relationship; first mirroring circuitry to mirror a sum of the first current source and the second current source to an output current source; and second mirroring circuitry to mirror the sum of the first current source and the second current source for comparison with a third current source, the third current source providing a minimum current magnitude, the third current source coupled to the second current source to control output of the second current source; wherein said output current source has a piece-wise linear relationship between current and temperature such that an output current of said output current source is variable within an operating temperature range.