A LOW-NOISE LOW-POWER SECOND-ORDER COMPENSATED CMOS BANDGAP REFERENCE
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The design of a low-noise and low-power second-order bandgap reference voltage source using a linear combination of two base-emitter voltages with only one scaling factor is treated. The design takes into account the temperature dependency of the resistors and the finite current gain of BJT�s. The circuit is integrated in a CMOS process. The output voltage is approximately 140 mV with an average temperature dependency of 22.5 ppm/K in the range of 0�C to 120�C. Its equivalent output noise voltage is 57.6nV/vHz. The total current consumption is about 115 �A from a 2V voltage-supply.Keywords: bandgap reference, negative feedback, systematic design.
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2018 ◽
Vol 8
(3)
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pp. 27
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2012 ◽
Vol 195-196
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pp. 84-89
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2021 ◽
Vol 18
(4)
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pp. 1327-1330
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2014 ◽
Vol 23
(05)
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pp. 1450058
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