用于16位125MS/s ADC的无采样保持运放前端电路
Journal of China Academy of Electronics and Information Technology（2018）
Abstract
提供了一种适宜于高速、高精度开关电容型流水线模数转换器(ADC)的无采样保持放大器的模拟前端电路.该模拟前端电路作为第一级4.5位子级电路,被应用于一款16位125 MS/s开关电容流水线ADC中进行验证.该ADC电路采用0.18 μm 1P6M 1.8V CMOS工艺实现,测试结果表明该ADC电路在全速采样条件下对于10.1 MHz的输入信号得到的信噪比为77.5 dBFS,无杂散动态范围为94.8 dB,总功耗为330 mW.
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