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最近在做PSD，模拟乘法器的效果不理想，有知道的帮一下我，感激不尽哪！
没有查到，估计是没有了
如果模拟器件无法实现，为何不考虑数字实现呢？ DPSD理论上比PSD更有优势，当然对前端的放大、滤波、AD采集也有较高要求。
