| 摘要 |
<p>A level shift circuit which drops the output voltage of the prior stage circuit to an input voltage level required at the next stage circuit, includes a source follower enhancement type FET a gate of which is connected to an input terminal, a drain of which is connected to a positive power supply, and a source of which is connected to an anode of a level shift diode, a current adjusting enhancement type FET a drain of which is connected to a cathode of the level shift diode, a drain and a gate of which are connected with each other via a constant current source provided therebetween, and a source of which is connected to a negative power supply, an output terminal which is taken out from the connection node of the level shift diode and the constant current source, a resistor connected between the constant current source and the negative power supply, and the current adjusting enhancement type FET having its gate-to-source voltage set by a current flowing through the resistor to adjust the current flowing through the source follower enhancement type FET. <IMAGE></p> |
