Patent ID: 10061340

Abstract:
A bandgap reference voltage generator, comprises: a bias circuit configured to generate a start signal; a startup circuit having at least two serially-connected transistors configured to receive the start signal; a proportional-to-absolute-temperature (“PTAT”) generation circuit having a first current mirror, an amplifier, a resistor, and transistors; and a complementary-to-absolute-temperature (“CTAT”) generation circuit having a second current mirror, a passive network of resistors, and at least one transistor. The at least two serially-connected transistors are connected across a first input of the amplifier and a second input of the amplifier. An output of the amplifier is coupled to the first current mirror and the second current mirror. The passive network of resistors is coupled across outputs of the second current mirror. The CTAT generation circuit has an output node for outputting a bandgap reference voltage.