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In this paper a new voltage reference circuit concept is introduced. The presented voltage reference circuit is especially useful for low power applications. The reference circuit has two modes: the high accuracy and the low power mode. During the high accuracy mode the energy consumption is much higher than during the low power mode where accuracy is secondary. The fields of application are use cases...
A stable reference voltage (or current) source is a standard component of today's microelectronics systems. In particle physics experiments such reference is needed in spite of harsh ionizing radiation conditions, i.e. doses exceeding 100 Mrads and fluences above 1e15 n/cm2. After such radiation load a bandgap reference using standard p-n junction of bipolar transistor does not work properly. Instead...
The design of a 450nW bandgap temperature sensor in the 0 to 175°C range is presented. The design demonstrates a leakage current compensation technique that is useful for low-power designs where transistor performance is limited. The technique mitigates the effects of leakage in Brokaw bandgap references by limiting the amount of excess current that is entering the bases of the main bipolar pair due...
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