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CONSTANT CURRENT GENERATION CIRCUIT, CONSTANT VOLTAGE GENERATION CIRCUIT, CONSTANT VOLTAGE/CONSTANT CURRENT GENERATION CIRCUIT, AND AMPLIFICATION CIRCUIT
CONSTANT CURRENT GENERATION CIRCUIT, CONSTANT VOLTAGE GENERATION CIRCUIT, CONSTANT VOLTAGE/CONSTANT CURRENT GENERATION CIRCUIT, AND AMPLIFICATION CIRCUIT
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机译:恒定电流产生电路,恒定电压产生电路,恒定电压/恒定电流产生电路和放大电路
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摘要
A current flows through an n-channel MOS field effect transistor in a constant current generation circuit, and a current which is equal to or a constant multiple of the current flows through a resistor. A bias is set such that the transistor operates in a saturation region. A voltage applied across both ends of a resistor is uniquely determined by a gate-source voltage of the transistor. The difference between a threshold voltage of the transistor and a voltage applied across both ends of the resistor is set within a range of 0.1 volts to 0.4 volts, so that the current flowing through the resistor is made constant without depending on the temperature change.
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