| 摘要 |
A voltage reference source is provided which is temperature stable and can be made by standard CMOS processes. The voltage reference can provide an output voltage which is equal to twice the bandgap voltage. The voltage reference circuit uses a differential amplifier which has an output coupled to an additional amplifying stage. Two substrate bipolar transistors are used wherein the emitter current density of one of the transistors is larger than the emitter current density of the other transistor. An additional transistor is inserted between the output of the amplifying stage and the substrate bipolar transistors thereby providing the output voltage of twice the bandgap voltage.
|
