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电路功能与优势图1所示电路是基于超低噪声差分放大器驱动器ADA4960-1和12 bit、500 MS/s模数转换器AD9434的宽带接收机前端。因是原理示意图,未显示所有连接和去耦。三阶巴特沃兹抗混叠滤波器基于放大器和ADC的性能以及接口要求而优化。由滤波器网络、变压器和其他阻性元件引起的总插入损耗仅为1.2 dB。整体电路带
Circuit Features and Benefits The circuit shown in Figure 1 is based on the ADA4960-1 ultralow noise differential amplifier driver and the wideband receiver front end of the 12-bit, 500-MS / s analog-to-digital converter AD9434. Because of the principle diagram, all connections and decoupling are not shown. Third-order Butterworth anti-aliasing filters are optimized based on amplifier and ADC performance and interface requirements. The total insertion loss due to filter networks, transformers and other resistive components is only 1.2 dB. The whole circuit band