Segmented compensation band-gap reference voltage source circuit
The invention discloses a segmented compensation band-gap reference voltage source circuit. The segmented compensation band-gap reference voltage source circuit comprises a starting circuit, a first-order band-gap reference voltage source circuit and a temperature segmented compensation generation c...
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| Hauptverfasser: | , , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a segmented compensation band-gap reference voltage source circuit. The segmented compensation band-gap reference voltage source circuit comprises a starting circuit, a first-order band-gap reference voltage source circuit and a temperature segmented compensation generation circuit. Weighting is carried out on a current generated by a difference between emitter-base voltages of two PNP-type triodes on a resistor R3 and a current generated by an emitter-base voltage VEB1 of a PNP-type triode Q1 on a resistor R2 to generate a first-order temperature compensation current.The first-order temperature compensation current generates a first-order temperature compensation band-gap voltage on the resistors R5 and R4. Meanwhile, the first-order temperature compensation current provides bias current for the temperature segmentation compensation generation circuit. The temperature subsection compensation generation circuit generates subsection temperature compensation currents of four different te |
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