{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

MIT6_012s09_tutor05

# MIT6_012s09_tutor05 - when the surface is inverted at the...

This preview shows pages 1–2. Sign up to view the full content.

MIT OpenCourseWare 6.012 Microelectronic Devices and Circuits Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms .

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

View Full Document
6.012 Microelectronic Devices and Circuits Tutorial #5 Problem 1 n MOSFET You are given an n MOSFET with the following parameters V Tn = 0.5 V , μ n = 250 c m 2 / V s , t ox = 10 n m , = 0.5 μ m , = 25 μ m The MOSFET is biased as shown in Figure T5 1 with the following initial bias conditions: V GS = 2.5 V , V DS = 2.5 V , V BS = 0 V I D V DS V DS + + V BS + V GS Figure T5 1. a) In what regime of operation is the MOSFET? b) Ignoring secondary effects such as channel length modulation (CLM), what is the drain current I D ? c) If the substrate doping is N a =10 17 cm 3 , what is the maximum bulk
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: when the surface is inverted at the source end Q Bmax (y=0) for V BS =0? d) If the body ‐ to ‐ source voltage V BS is now changed to V BS = ‐ 2 V, with other bias conditions remaining the same, in what regime is the n ‐ MOSFET? e) If the body ‐ to ‐ source voltage V BS is now changed to V BS = ‐ 2 V, with other bias conditions remaining the same, what are the new values of Q Bmax (y=0)? f) How does Q y = + Q y = when V BS = ‐ 2 V compare to N ( ) B max ( ) ( = ) + Q ( y = ) when V BS =0 V? Q y N B max...
View Full Document

• Spring '08
• CharlesSodini
• Channel length modulation, Threshold voltage, bias conditions, Microelectronic Devices and Circuits, body‐to‐source voltage VBS

{[ snackBarMessage ]}

### Page1 / 2

MIT6_012s09_tutor05 - when the surface is inverted at the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online