Bandgap reference circuit

Bandgap reference circuit

A bandgap reference circuit includes a current-voltage mirror circuit having first, second, third, and fourth nodes, a transistor having a current path coupled between a source of supply voltage and the first node, a current mirror portion having an input coupled to the first node and a control term...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: BUTLER DOUGLAS BLAINE
Format: Patent
Sprache:eng
Schlagworte:
AMPLIFIERS
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
CONTROLLING
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
PHYSICS
REGULATING
SEMICONDUCTOR DEVICES
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:A bandgap reference circuit includes a current-voltage mirror circuit having first, second, third, and fourth nodes, a transistor having a current path coupled between a source of supply voltage and the first node, a current mirror portion having an input coupled to the first node and a control terminal coupled to the fourth node, a serially coupled first resistor and first diode coupled between the output of the current mirror portion and ground, a serially coupled second resistor and second diode coupled between the third node and ground, a third diode coupled between the second node and ground, and a differential amplifier having a first input coupled to the fourth node, a second input coupled to the output of the current mirror portion for generating a bandgap reference voltage, and an output coupled to the gate of the transistor.