A Self‐biased and All‐in‐one Voltage and Current Reference
Electronics letters(2020)
摘要
This Letter presents a high-performance self-biased and all-in-one voltage and current reference without BJT and V-I converter exploiting the zero-temperature-coefficient point of the N-type MOSFET. With the help of the low-temperature-coefficient resistors and the self-biased two-stage OTA structure, the all-in-one reference can achieve the average temperature coefficients of 6.6 and 34 ppm/degrees C of voltage and current reference from -40 to 125 degrees C, respectively. Meanwhile, the line sensitivities are 0.08%/V and 0.23%/V of voltage and current reference. And the power supply rejection ratio of the voltage reference is -93 dB@100 Hz with the power consumption of 12.6 mu W@tt corner and VDD = 2.5 V. The reference circuit is realized in a standard 180 nm CMOS process with the area of 0.0621 mm x mm.
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关键词
Power electronics, supply and supervisory circuits,CMOS integrated circuits
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