| 摘要 |
A correction network for a bow-shaped temperature characteristic includes a resistor and a semiconductor junction having different temperature coefficients and operated with related potentials thereacross to generate temperature-dependent currents responsive to an input current. That temperature-dependent current is subtractively combined with a reference current of predetermined value so that a corrective current, the magnitude of which is usually substantially zero at a predetermined temperature and is temperature-dependent at either higher and lower temperatures, respectively, is generated. In a particular embodiment, a first such corrective current is applied to a node of an extrapolated band-gap voltage reference circuit to tend to reduce the degree to which the reference potential departs from a desired value at temperatures higher than the predetermined temperature. A second corrective current is applied to the same or a different node thereof to tend to reduce the degree to which the reference potential departs from the desired value at temperatures lower than the predetermined temperature.
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