| 摘要 |
A level shift circuit includes a plurality of diodes connected in tandem in a forward direction, a normally-ON transistor connected between a high-potential power line and a node of a highest potential side among the plurality of diodes connected in tandem, and a first pull-down circuit connected between a node of a lowest potential side among the plurality of diodes connected in tandem and a low-potential power line. The level shift circuit further includes a second pull-down circuit connected between a node among the plurality of diodes and the low-potential power line. An input voltage is applied to a control electrode of the normally-ON transistor, and an output voltage is taken from the node of the lowest potential side among the plurality of diodes. By the constitution, the magnitude of a level shift can remain constant relative to a wide range of input voltages. Eventually, a linear input/output characteristic can be obtained.
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