Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1988-02-16
1989-02-28
Salce, Patrick R.
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
323315, 323907, G05F 316
Patent
active
048089087
ABSTRACT:
A bipolar bandgap reference circuit employing three resistors of selected nominal resistance values and a method of trimming the values of two of the resistors to cancel the slope and curvature of output voltage due to thermal drift. One of the resistors provides a positive temperature coefficient to counter the temperature dependency of bipolar base-emitter characteristics; this resistor is not trimmed. The other two resistors are thin-film, low TC devices and are "trimmed" (i.e., adjusted) sequentially, to match calculated values intended to minimize the first and second derivatives of the bandgap cell output, as a function of temperature.
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Meijer et al., "A New Curvature-Corrected Bandgap Reference", 12/82, IEEE Journal of Solid-State Circuits, vol. SC-17, No. 6, pp. 1139-1143.
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Brokaw A. Paul
Lewis Stephen R.
Analog Devices Inc.
Salce Patrick R.
Sterrett Jeffrey
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