Patent ID: 9122290
Filing Date: 2015-09-01
Classification: G05F

Abstract:
1. A circuit for generating a temperature-stabilized reference voltage on a semiconductor chip, comprising: a differential amplifier comprising a first input, a second input and an output; a complementary to absolute temperature (CTAT) circuit configured to generate a CTAT voltage at an output thereof; and a first resistor comprising a first terminal and a second terminal, wherein the first resistor is coupled between the output of the differential amplifier and the output of the CTAT circuit, and wherein the first terminal of the first resistor is connected to the first input of the differential amplifier, and the second terminal of the first resistor is connected to the second input of the differential amplifier and to the output of the differential amplifier; wherein the CTAT circuit comprises a second resistor coupled between the output of the CTAT circuit and a negative supply voltage; wherein the CTAT circuit further comprises a bipolar junction transistor and a third resistor, and wherein the second resistor is connected in parallel to a series connection of the bipolar junction transistor and the third resistor; wherein the first resistor, the second resistor and the third resistor are connected to a common node.