Patent ID: 8022751

Claim:
An integrated circuit, comprising: an untrimmed bandgap generation circuit; and a bandgap generation circuit coupled to the untrimmed bandgap generation circuit, the bandgap generation circuit comprising: a current source controlled by said untrimmed bandgap generation circuit and coupled in series with a resistor and a first bipolar diode device, one or more of bipolar diode devices, each bipolar diode device coupled in series with a switch wherein each bipolar diode device and switch coupled in series is coupled in parallel with said first bipolar diode device, wherein a trimmed bandgap reference voltage output of the integrated circuit is a function of the number of parallel switched bipolar diode devices, and wherein at least one additional bipolar diode devices is coupled in parallel with said first bipolar diode through a fuse coupled in series with said at least one additional bipolar diode device.