| 摘要 |
PURPOSE:To generate an optional reference voltage independent of temperature, by adding a voltage proportional to the forward voltage between the base and the emitter of a transistor TR and a voltage proportional to an absolute temperature and flowing an attained constant current to a resistance. CONSTITUTION:A voltage Vab proportional to a forward saturation voltage VBE between the base and the emitter of a TR is attained in a DELTAVBE generating circuit 7 consisting of TRs 8 and 9 and resistances 10-13. The voltage Vab and a voltage V24 proportional to an absolute temperature T are added in a T proportional constant current generating circuit 14 consisting of TRs 15-21, diodes 22 and 23, and a resistance 24 to attain a constant current I5 having an optional value independent of temperature. This current I5 is flowed to a resistance 27 set to an optional value to generate an output voltage V0 which is a desired reference voltage independent of temperature. |
