Lect. 24: High-Frequency Response of MOSFET CS
Lect. 24: High-Frequency Response of MOSFET CS
Lect. 24: High-Frequency Response of MOSFET CS
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<strong>Lect</strong>. <strong>24</strong>: <strong>High</strong>-<strong>Frequency</strong> <strong>Response</strong> <strong>of</strong> <strong>MOSFET</strong> <strong>CS</strong><br />
Miller’s Theorem:<br />
Two circuits below are identical assuming the rest <strong>of</strong> circuit does not change<br />
I<br />
V ⎛V − KV<br />
1 1 1<br />
1<br />
= = I =<br />
Z ⎜<br />
1<br />
Z ⎟<br />
⎝ ⎠<br />
VZ Z<br />
V KV −K<br />
1<br />
∴ Z1<br />
= =<br />
1−<br />
1<br />
1<br />
⎞<br />
I<br />
2<br />
0 V 0 KV V KV<br />
= − = − = I =<br />
−<br />
Z Z Z<br />
Z<br />
2 1 1 1<br />
2 2<br />
−KV Z<br />
Z<br />
1<br />
∴<br />
2<br />
= =<br />
V<br />
1<br />
1−<br />
KV1 (1 − )<br />
K<br />
Electronic Circuits 1 (09/2)<br />
Pr<strong>of</strong>. Woo-Young Choi
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