US 11,921,535 B2
Bandgap reference circuit
Sandeep Shylaja Krishnan, Kozhikode (IN)
Assigned to TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Oct. 29, 2021, as Appl. No. 17/514,433.
Prior Publication US 2023/0139284 A1, May 4, 2023
Int. Cl. G05F 3/26 (2006.01)
CPC G05F 3/265 (2013.01) 20 Claims
OG exemplary drawing
 
1. A bandgap reference circuit, comprising:
an amplifier having first and second amplifier inputs and an amplifier output;
a first transistor having first and second current terminals and a first control terminal, wherein the first current terminal is connected to the first amplifier input;
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 control terminal is coupled to the second amplifier input; and
a third transistor having fifth and sixth current terminals and a third control terminal, wherein the fifth current terminal is connected to the second amplifier input, the sixth current terminal is connected to the second current terminal, and the third control terminal is coupled to the second control terminal.