| 摘要 |
A temperature sensor circuit with a differential output, a differential pair circuit and a feedback circuit. The differential pair circuit has a first MOS transistor whose gate is connected to an output terminal of the temperature sensor circuit and to a reference voltage and a second MOS transistor whose source is connected to the source of the first MOS transistor. The capacity ratios, or gate-width and gate-length ratios (W/L) of the first and second MOS transistors are different. The first and second MOS transistors have a load circuit connected to their drains and a constant current source connected to their sources. The output voltage of the differential pair circuit is connected to the other output terminal of the temperature sensor circuit, as well as to the gate of the second MOS transistor thereby feedback-controlling the differential pair circuit so that the drain currents of the first and second MOS translators are equal to each other. The load is a current mirror circuit, that has two MOS transistors whose gate-width and gate-length ratios are either different from or equal to each other.
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