当大部分JFET运放的输入超过它的共模范围时，输出可能发生极性翻转。
When inputs to most JFET op amps exceed the common-mode range for the part, the output may reverse polarity.
为此，采用了新的差分输入级，使共模范围增大，同时尽量不减少差分输入级的增益。
For this, I adopt the new differential input stage to make input common mode range enlarged, and as far as possible not reduce its gain.
提出一种不对称互补的输入级结构，实现了在整个共模范围内的恒跨导。
An architecture based on non-symmetrical complementary to attain a constant-gm over the whole common mode is proposed.
提出一种不对称互补的输入级结构，实现了在整个共模范围内的恒跨导。
An architecture based on non-symmetrical complementary to attain a constant-gm over the whole common mode is proposed.
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