关键词: 斩波调制技术, 动态元件匹配技术, 带隙基准源, 启动电路

Abstract:  This paper optimizes and improves the traditional Banba-type bandgap reference structure by proposing the use of chopper compensation technology and dynamic compensation technology to compensate for non-ideal factors in the bandgap reference. This approach effectively reduces the temperature drift coefficient of the output voltage under Monte Carlo simulations. Based on Spectre simulation results, Monte Carlo simulations of the output voltage and output current show that the average output voltage is 824.988  mV with a standard deviation of 103.5  μV within 3σ, and the average output current is 10.082  μA with a standard deviation of 151.9  μA within 3σ. These results demonstrate a significant improvement in the temperature coefficient of the bandgap reference.

Key words: chopper modulation technology, dynamic element matching technology, , bandgap reference, startup circuit