科研之友
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摘要
Based on the negative feedback technique, an ultra-low-power CMOS voltage reference without amplifier is proposed using a 0.18 mu m CMOS technology. The proposed voltage reference achieves a temperature coefficient (TC) of 7.2 ppm/degrees C when the temperature ranges from -20 degrees C to 80 degrees C, only consuming 12.8-nA current at room temperature. Besides, the minimum supply voltage is 0.75 V and line sensitivity (LS) is 0.24 mV/V when supply voltage ranges from 0.75 V to 3.5 V. The power supply rejection ratio (PSRR) is only -79 dB at 100 Hz, -56 dB at 1 MHz, respectively.
