仔细研读了ZHCA479-跨阻型放大器应用指南,文档详细解读了跨阻运放补偿技术。
但是在后面的应用实例中,CF补偿0.24P时过冲消失,补偿0.45P时,振铃消失。但是从文档的波特图看,无论补偿0.24P还是0.45P,增益为0时的相移远超过180°,这样的运放不会自激吗??怎样从波特图中考虑跨阻运放自激、稳定这个问题呢?
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