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Old 10th November 2005, 02:43 AM   #1
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Default Small signal FETs vs BJTs

I've got a cascode design for a VAS using all BJTs, and I was considering replacing the cascode BJTs with FETs. Question:

BJTs have an ft (I like it to be at least 50MHz for small signal purposes), what is the equivalent to this characteristic with FETs?

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