Patent ID: 7772653

Claim:
A semiconductor apparatus comprising a double poly bipolar transistor and a double poly metal oxide semiconductor (MOS) transistor; wherein a first polysilicon layer comprises a base of the double poly bipolar transistor and a gate of the double poly MOS transistor; wherein a second polysilicon layer separate from the first polysilicon layer comprises an emitter of the double poly bipolar transistor and a source/drain of the double poly MOS transistor; wherein the base of the double poly bipolar transistor comprises a first dopant having a first dopant concentration, and wherein the gate of the double poly MOS transistor comprises the first dopant having the first dopant concentration; and wherein the emitter of the double poly bipolar transistor comprises a second dopant having a second dopant concentration, and wherein the source/drain of the double poly MOS transistor comprises the second dopant having the second dopant concentration.