Patent ID: 6992472

Claim:
A circuit comprising: a BGR (Bandgap Reference) circuit having an operating point and that generates a temperature-stabilized reference voltage, the BGR circuit having: an operational amplifier from whose output voltage the reference voltage is derived, and a BGR circuit branch with two components whose temperature dependencies are opposed during normal operation of the BGR circuit, an input of the operational amplifier connected via a connecting line to the BGR circuit branch, and the output voltage that can be tapped at an output of the operational amplifier dropping across the BGR circuit branch; and a setting circuit that sets the operating point of the BGR circuit, the setting circuit having: a voltage comparator, an auxiliary circuit branch with two components that are arranged exactly and have the same dimensions as the two components of the BGR circuit branch, the voltage comparator comparing the output voltage of the operational amplifier with a voltage dropping across the auxiliary circuit branch, a first current source that feeds the auxiliary circuit branch, and a second current source that generates, as a function of the result of the comparison, a setting current that is fed into the connecting line.