| 摘要 |
A reference voltage generator comprises a differential amplifier with a negative feedback loop and having an input offset determining the output voltage, this offset being due to the difference in threshold voltages of two IGFETs T1, T2 resulting from the provision of differently doped semiconductor gate electrodes. The output of the amplifier is fed back to the inverting input either directly or via a potential divider and a reference voltage level (eg VSS or VDD) is connected to the non- inverting input. The output voltage is determined (relative to the reference voltage level) by the difference in threshold voltages of the input transistors this difference being substantially independent of temperature variations. <IMAGE> |
