BJT Internal Capacitances and High Frequency Model - BITS Pilani
BJT Internal Capacitances and High Frequency Model - BITS Pilani
BJT Internal Capacitances and High Frequency Model - BITS Pilani
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Cut off frequency<br />
We can observe from the above slope that frequency at which<br />
|h fe | drops to unity is called as unity gain b<strong>and</strong>width w T <strong>and</strong> is<br />
given by w T =β 0 w β<br />
w<br />
T<br />
gm<br />
gm<br />
; fT<br />
( C C ) 2 ( C C<br />
)<br />
f T is some times specified in the<br />
datashet or given as a function of<br />
I c <strong>and</strong> V CE<br />
<strong>BITS</strong> <strong>Pilani</strong>, Dubai Campus
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