| 摘要 |
<p>A VI converting circuit (40n) receives a voltage outputted from a holding circuit (30n), converts the received voltage into a current according to the resistance of a resistor (R40), and outputs the current from the source terminal of a MOS transistor (T40). An amplifier (A40) has a sufficient open-loop gain, and the MOS transistor (T40) operates in a saturated region. The current I outputted from the VI converting circuit (40n) is proportional to the voltage V inputted into the VI converting circuit (40n), and their relation is expressed by [I = V/R] where R is the resistance of the resistor (R40).</p> |
