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For a low voltage bandgap reference design, there is a tradeoff between the supply voltage and the performance of the bandgap reference in terms of untrimmed accuracy and 1/f noise performance. In this paper, the application of chopper stabilizing technique is proposed to address this tradeoff. Over five times of improvement in untrimmed accuracy and 1/f noise performance were demonstrated through a low voltage bandgap reference fabricated in a 0.8µm CMOS process.

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