Patent ID: 11868152
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A bandgap reference circuit comprising:
a first operational amplifier comprising a first output terminal, a first input terminal connected to a first node, and a second input terminal connected to a second node;
a first diode-connected transistor connected between the first node and a first power source;
a second diode-connected transistor connected between the second node and the first power source;
a third diode-connected transistor connected between a third node and the first power source;
a first resistor connected between the second node and an output node at which a reference voltage is output;
a second operational amplifier comprising a second output terminal, a third input terminal connected to the second node, and a fourth input terminal connected to a fourth node;
a second resistor connected between the fourth node and the first power source;
a third resistor connected between the third node and the second node;
a fourth resistor connected between the first node and the first diode-connected transistor;
a first current mirror connected to a second power source and the first output terminal and configured to transfer a first current to the output node and the third node; and
a second current mirror connected to the second power source and the second output terminal and configured to transfer a second current to the third node and the fourth node.