Re: [問題] 差動放大器+共源放大器
看板Electronics作者deathcustom (litron-intl)時間13年前 (2012/06/21 12:02)推噓2(2推 0噓 15→)留言17則, 4人參與討論串3/3 (看更多)
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第一級
Ro1 = ro4//ro6
第二級
Ro2 = ro7//ro8
我不懂你為啥會用串聯= =
fp1 = 1/2pi(Ro1Co1Gm2Ro2)
fp2 = Gm2/2piCL
fz = Gm2/2piCo1
相關的知識請去看Smith 6/e Ch 8/Ch 10
實作上加一小電阻
使fz跟fp2重疊或在附近
你這裡這題，因為只是考題，就都有可能
但是實作上就不可能了~"~
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理論上也可以加一個大電阻使fz跟fp1重疊
則可以創造出極寬頻放大器
但是實作上會有問題
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