Bandgap reference circuit
AssigneeIndustrial Technology Research Institute
InventorMIng-Huang Liu
Life of this patent
Estimating the term…
Abstract
The present invention relates to a bandgap reference circuit for generating a reference voltage. The bandgap reference circuit comprises an operational amplifier; a plurality of transistors connected to the operational amplifier; a plurality of resistances connected to the plurality of transistors; and a plurality of bipolar transistors connected to the plurality of resistances. A first and a second resistances of the plurality of resistances are used for voltage level shifting so that the operational amplifier can normally operate.
Claims10
A bandgap reference circuit for generating a reference voltage, comprising:
- an operational amplifier;
- a plurality of transistors connected to the operational amplifier;
- a plurality of resistances connected to the plurality of transistors, wherein a first and a second resistances of the plurality of resistances are used for voltage level shifting so that the operational amplifier can normally operate;
- and
- a plurality of bipolar junction transistors connected to the plurality of resistances.
A bandgap reference circuit for generating a reference voltage, comprising:
- an operational amplifier comprising a first and a second input ends, and an output end;
- a plurality of transistors connected to the operational amplifier;
- a plurality of resistances connected to the plurality of transistors wherein a first and a second resistances of the plurality of resistances are used for voltage level shifting so that the operational amplifier can normally operate;
- and
- a plurality of bipolar junction transistors respectively connected to the plurality of resistances;
- wherein the first input end of the operational amplifier is connected to the drain of the first transistor of the plurality of transistor, the second input end is connected to the drain of the second transistor of the plurality of transistors, and the output end is connected to the gates of the transistors, and one end of the first resistance is connected to the first input end of the operational amplifier, and the second resistance is connected to the second input end of the operational amplifier.
Dependencies are inferred from the claim text.