| 摘要 |
PURPOSE:To decrease the power consumption and also to obtain simply a comparatively large load resistance value by using an MOS transistor (TR) of C- MOS constitution as a load. CONSTITUTION:Load P-MOS TRs 8, 81 and N-MOS TRs 22, 23 constitute a C- MOS and it is a load to a differential amplifier. The on-resistance characteristic of the C-MOS load is as shown in figure, the resistance is not much changed by the change in a drain-source voltage VDS, i.e. the change in an input voltage Vin but is nearly constant. As a result, the linearity the same as that of a differential amplifier taking a resistor as a load is obtained for the differential amplifier of the C-MOS load constitution.
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