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Circuit for outputting stable reference voltage against variation of background temperature or variation of voltage of power source
Circuit for outputting stable reference voltage against variation of background temperature or variation of voltage of power source
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机译:针对背景温度变化或电源电压变化输出稳定参考电压的电路
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摘要
A reference voltage circuit includes an operational amplifier, a first fixed resistance resistor, a second fixed resistance resistor, a third fixed resistance resistor, a first diode and a second diode. The reference voltage circuit further includes a fourth fixed resistance resistor having an end connected to a non-inverting input terminal of the operational amplifier and the other end connected to the first diode. The reference voltage circuit is characterized by a value of the resistance of the fourth resistor being less than the resistance of the first resistor and a temperature coefficient of the fourth resistor being greater than any of the temperature coefficients of the first, second and third resistors.
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