PTAT current source

Details PTAT current source PTAT current source

1994-11-18

1997-07-08

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

323907, 330257, G05F 316

Patent

active

056465181

ABSTRACT:
Briefly, in accordance with one embodiment of the invention, a current source comprises: a first and a second current path, the current paths being coupled so as to provide, during circuit operation, first and second currents through the respective current paths in a substantially predetermined direct proportion. The current source further includes an operational amplifier having its respective input terminals coupled to the first and second current paths, the operational amplifier being coupled in a feedback configuration so as to maintain substantially equal voltages between a first and second predetermined point respectively located along the first and second current paths. Furthermore, the respective first and second currents are related to the respective first and second voltages substantially in accordance with the junction diode equation.

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