Voltage reference source capable of compensation in full temperature range
A technology of voltage reference source and temperature compensation circuit, which is applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., to achieve the effect of low temperature coefficient and good temperature stability
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[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0017] The full temperature range compensation voltage reference source circuit block diagram of the present invention is as follows figure 1 As shown, it includes a start-up circuit, a first-order temperature compensation circuit, a low-temperature high-order compensation circuit, a high-temperature high-order compensation circuit, a negative feedback loop, a proportional superposition output circuit and a current bias circuit. The start-up circuit provides start-up bias voltage for the full temperature range compensation core circuit. When the whole circuit works stably, the start-up circuit stops working and is isolated from the whole circuit. The current bias circuit is mainly for the first-order temperature compensation circuit and negative feedback loop. bias current for proper operation. The negative feedback loop is mainly to...
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