Patent ID: 11921535
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A bandgap reference circuit, comprising:
a first transistor having first and second current terminals and a first control terminal, wherein the first transistor is configured to pass a first proportional to absolute temperature (PTAT) current;
a second transistor having third and fourth current terminals and a second control terminal, wherein the third current terminal is coupled to the first control terminal, the fourth current terminal is connected to the second current terminal, and the second transistor is configured to pass a second PTAT current;
a first resistor connected between the third current terminal and the second control terminal, and configured to pass the second PTAT current to the second transistor;
a third transistor having fifth and sixth current terminals and a third control terminal, wherein the fifth current terminal is coupled to the second control terminal, the sixth current terminal is connected to the second current terminal, the third control terminal is connected to the second control terminal, and the third transistor is configured to pass a third PTAT current that bypasses the first resistor and the second transistor; and
a second resistor coupled between the first, second, and third transistors and a ground terminal, wherein the second resistor is configured to pass the first PTAT current, the second PTAT current, and the third PTAT current.