【摘要】 提出了一种应用于开关电容流水线模数转换器的CMOS预放大锁存比较器。比较器采用了交叉耦合负载、PMOS/NMOS比例优化和电容中和技术。该结构大幅提高了比较器的速度并有效抑制了回馈噪声,减小了失调电压,可以作为Flash ADC应用于高精度开关电容流水线ADC。更多还原

【Abstract】 To be compatible with switched capacitor pipelined ADC,a CMOS preamplifier-latch comparator is designed and well analyzed for high speed,low kick-back noise and low mismatch offset.The cross-coupled load,capacitor neutralization and the optimizing ratio of PMOS/NMOS are adopted in the comparator.Since the proposed architecture is effective for achieving,the comparator has been used in high accuracy switched-capacitor pipelined ADC as Flash ADC.更多还原