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目前用的芯片是TI的芯片dsp28377D，它的DA模块输出范围是0-3v，现在希望把它变成双极性-15到+15v，希望运放能比较匹配dsp，对DSP安全性有保证。请问各位有没有用到过相似的电路，或者设计过，请指教
