| 摘要 |
<p>A band-gap reference circuit having a pair of transistors (Q1 Q2) operated at different current densities to produce a positive temperature coefficient (TC) signal proportional to the > VBE of the two transistors and combined with a negative TC voltage derived from the VBE of one of the transistors to produce a composite signal substantially invariant with temperature. The A VBE signal component is increased in magnitude by connecting resistor string bias circuit (R,, R2; R4, Rs) to each of the transistors (Q2; Q1), to effectively multiply the VBE of each transistor, and thereby multiply the Δ VBE signal. The composite signal is sensed in the emitter circuits of the two transistors (at x and y), so that it is unnecessary to access the collectors of the transistors, thereby making it readily possible to use the circuit with CMOS IC devices.</p> |
