Patent ID: 11937005
Assignee: GUANGZHOU TYRAFOS SEMICONDUCTOR TECHNOLOGIES CO., LTD
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 5:
6. The output stage circuit according to claim 1, wherein the control terminal of the fifth transistor is coupled to the second terminal of the fifth transistor, and the output stage circuit further comprises:
a ninth transistor, wherein a first terminal of the ninth transistor is coupled to the supply voltage, a control terminal of the ninth transistor is coupled to the control terminal of the fifth transistor and the control terminal of the sixth transistor, and a second terminal of the ninth transistor is coupled to a reference resistor; and
a second operational amplifier, wherein a first input terminal of the second operational amplifier is coupled to the second terminal of the ninth transistor, a second input terminal of the second operational amplifier is coupled to the second terminal of the fourth transistor, and an output terminal of the second operational amplifier is coupled to the control terminal of the fourth transistor and the control terminal of the first transistor.