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【单选题】
长尾型差分放大电路如图所示,其中RC=2.4kΩ、REE=5.1kΩ。如果IO=2mA,则该差分放大器单端输出时的共模抑制比CMRR约为
A.
50
B.
100
C.
200
D.
400
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