Patent ID: 8723595
Filing Date: 2014-05-13
Classification: G05F

Abstract:
1. A voltage generator, comprising: a first current source, generating a first current and a second current according to a first bias voltage, and the second current being provided to a common end, and the first and second currents having a first temperature coefficient; a second current source, generating a third current and a fourth current according to a second bias voltage, and the third and fourth currents having a second temperature coefficient; a first resistor, having a first and second ends, the first end being coupled to the first current source for receiving the first current, the first resistor generating an output voltage on the first end; a reference voltage generator, providing a first reference voltage and a second reference voltage according to the first and third currents; a first amplifier, coupled to the reference voltage generator and the first current source, the first amplifier generating the first bias voltage according to the first and second reference voltages; a second resistor, coupled between the second current source and the reference ground, the second resistor receiving the second current source for generating a third reference voltage; and a second amplifier, coupled to the reference voltage generator and the second current source, the second amplifier generating the second bias voltage according to the second and third reference voltages, wherein, the first temperature coefficient and the second temperature coefficient are complementary.