Band-gap reference circuit
A technology of reference circuit and compensation circuit, applied in the field of microelectronics, can solve the problem that the voltage source cannot meet the accuracy requirements of system-level modules, and achieve the effect of good accuracy requirements, low temperature coefficient, and high temperature range
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[0070] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0071] At present, the BE junction voltage with negative temperature characteristics and ΔVbe with positive temperature characteristics can be added together with appropriate weights to perform first-order temperature compensation, thereby obtaining a temperature-independent reference voltage, the reference voltage V ref Can refer to formula (1), where, let V ref ...
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