[求助]关于低噪声高精度音频直流放大器

yanzi3jia1

<p><font size="3">求救！！！</font></p><p><font size="3">小妹的毕设是低噪声高精度音频直流放大器，老师给的要求是输入电压为5mv,输出电压达1v,技术指标：输入失调电压0.03mV,输入失调电流15nA,温度漂移系数0.4<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">μV/<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">℃,增益带宽积8MHz.</span></span></font></p><p><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">要求主要是要完成选型及做一些比较分析。</span></span></p><p><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">高手们可否提点下，也许你轻轻一句，可以让我省掉很多麻烦呢。</span></span></p>