| 摘要 |
PROBLEM TO BE SOLVED: To identify a bandgap reference circuit that is not subject to process and temperature variations. SOLUTION: The bandgap reference circuit 30 includes a current-voltage mirror circuit 12 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 14 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 14 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, and an output coupled to the gate of the transistor. COPYRIGHT: (C)2004,JPO&NCIPI
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