| 摘要 |
A current-compensating circuit (300) provides compensation to a reference voltage (Vref) such that the current (Iout) through a diode-connected MOS transistor (N6) remains constant, regardless of threshold voltage. The compensating circuit includes another MOS transistor (N5) that is connected as a voltage follower in saturation. Variations in the component of the reference voltage (Vr1, Vr2) that are produced by the effects of process variation on this other MOS transistor act to correct the current variations that these same process variations cause in the diode-connected MOS transistor. |
