6.2.The input stages of the CCII and the operational amplifier in transimpedance implifier are realized with folded cascode amplifier to reach high CMRR , large open loop gain and low offset.

 
  • 为了提高仪表放大器的电源抑制比,并得到大的开环增益,相对低的失调等性能,电流传输器的输入级和跨阻放大器中运算放大器输入级均采用折叠共源共栅放大器。
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