| FET
Small-Signal Model |
|
|
|
|
|
|
|
|
|
| • | Voltage
controlled |
|||||||
| amplifier |
||||||||
| • | Small-signal
model |
|||||||
| same for JFETs
& |
||||||||
| MOSFETs |
||||||||
| • | High input
impedance |
|||||||
| • | is
= id |
|||||||
| ig=0 |
| id |
| G |
| D |
|
|
| + |
|
| - |
|
| ∞ |
| rd |
| gmvgs |
| is |
| S |
