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>491 TIデータシート(PCM1796/1798)によれば Dynamic performance such as the gain bandwidth, settling time, and slew rate of the operational amplifier affects the audio dynamic performance of the I/V section. The operational amplifier recommended for the differential circuit is the low-noise type. だ。2番目の文の差動回路=LPFだ。I/Vは出力電流量とかもキーらしい。