Patent ID: 8111057
Filing Date: 2012-02-07
Classification: G05F,H03F

Abstract:
1. A bandgap circuit comprising: a first PMOS transistor, a second PMOS transistor, a first NMOS transistor, and a second NMOS transistor, wherein a gate of the first PMOS transistor, a gate of the second PMOS transistor, a drain of the first PMOS transistor and a drain of the first NMOS transistor are interconnected, and a gate of the first NMOS transistor, a gate of the second NMOS transistor, a drain of the second PMOS transistor, and a drain of the second NMOS transistor are interconnected; a first NPN transistor and a second NPN transistor wherein an emitter of the first NPN transistor is connected to an emitter of the second NPN transistor, a collector of the first NPN transistor is connected to a source of the first NMOS transistor, and a collector of the second NPN transistor is connected to a source of the second NMOS transistor; and a third NMOS transistor, wherein a drain of the third NMOS transistor is connected to the emitter of the first NPN transistor and the emitter of the second NPN transistor; and a third NMOS transistor, wherein a drain of the third NMOS transistor is connected to the emitter of the first NPN transistor and the emitter of the second NPN transistor.