{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 18 - Lecture 18 Basic MOSFET amplifier MOSFET...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Lecture 18 – Slide 1 EE105, Fall 2013 Prof. Ming C. Wu Lecture 18 § Basic MOSFET amplifier § MOSFET biasing § MOSFET current sources § Common-source amplifier § Reading: Chap. 7.1-7.2 Lecture 18 – Slide 2 EE105, Fall 2013 Prof. Ming C. Wu Common-­‐Source Stage D D ox n v D m v R I L W C A R g A μ λ 2 0 = = =
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Lecture 18 – Slide 3 EE105, Fall 2013 Prof. Ming C. Wu Opera1on in Satura1on § In order to maintain opera1on in satura1on, V out cannot fall below V in by more than one threshold voltage. § The condi1on above ensures opera1on in satura1on. ( ) 1 Condition for M in saturation out in TH DD D D GS TH V V V V R I V V > > Lecture 18 – Slide 4 EE105, Fall 2013 Prof. Ming C. Wu CS Stage with λ =0 L out in L m v R R R R g A = = =
Background image of page 2
3 Lecture 18 – Slide 5 EE105, Fall 2013 Prof. Ming C. Wu CS Stage with λ ≠ 0 § However, channel length modula1on leads to finite output resistance, r o , which is in parallel with the load resistance, R L ( ) O L out in O L m v r R R R r R g A || || = = = Lecture 18 – Slide 6 EE105, Fall 2013 Prof. Ming C. Wu CS Gain Varia1on with Channel Length § Since λ is inversely propor1onal to L, the intrinsic voltage gain actually becomes propor1onal to the square root of L.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}