| 摘要 |
<p>A complementary band-gap voltage reference circuit comprising first and second groups of transistors (350, 352), each group containing a first transistor of npn type (Q3, Q1 ) and a second transistor of pnp type (Q4, Q2 ) and the transistors of different types in the same group having different emitter current conduction areas. The emitter-collector paths of the first transistors (Q4, Q2 ) of each group are connected in parallel so as to present differential base-emitter voltages (?Vbe N ). The second transistors (Q3, Q1 ) of each group are connected with their emitter-collector paths in parallel with a base-emitter junction of the first transistor (Q4, Q2 ) of the same group so as to present differential base-emitter voltages of the second transistors (?Vbe P ) across the first and second groups of transistors (350, 352). The output regulated voltage (Vref) is an additive function of the differential base-emitter voltages (?Vbe N , ?Vbe P ) and of additive base-emitter voltages (Vbe Q3 , Vbe Q2 ) of transistors (Q2, Q3 ) with smaller emitter current conduction area and different type.</p> |
