Patent ID: 8269548

Claim:
A zero-temperature-coefficient (ZTC) voltage or current generator, the generator comprising: a power amplifier; a first P type metal-oxide-semiconductor transistor coupled to an output terminal of the power amplifier; a first diode-connected bipolar transistor coupled to a negative input terminal of the power amplifier and a drain of the first P type metal-oxide-semiconductor transistor; a second P type metal-oxide-semiconductor transistor coupled to the output terminal of the power amplifier; a group of second diode-connected bipolar transistors, each second diode-connected bipolar transistor coupled to a positive input terminal of the power amplifier and a drain of the second P type metal-oxide-semiconductor; a negative-temperature-coefficient resistor coupled between the positive input terminal of the power amplifier and each second diode-connected bipolar transistor; a first zero-temperature-coefficient combined resistor coupled to the positive input terminal of the power amplifier; a third P type metal-oxide-semiconductor transistor coupled to the output terminal of the power amplifier; and a second zero-temperature-coefficient combined resistor coupled to a drain of the third P type metal-oxide-semiconductor transistor.