1756-IF6I
1756-IF6I
电流检测放大器AD8210和AD8418的CMRR测量结果分别如表3和表4所示。
结果表明，额外外部串联电阻的影响是AD8418 CMRR降低，而对AD8210 CMRR的影响相对较小。AD8418变为89 dB，AD8210则几乎保持不变(94 dB)。对于固定增益器件，AD8418和AD8210的共模阻抗相对较高，分别为750 kΩ和5 MΩ。
表1. AD8210增益误差
表2. AD8418增益误差
表3. AD8210 CMRR性能(增益为20)
1756-IF6I
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