ho11.l08_miller - Miller Approximation R Dutton B Murmann...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Miller Approximation R. Dutton, B. Murmann R. Dutton, B. Murmann 1 EE114 (HO #11) Stanford University Analysis with Extrinsic Caps Applying KCL at nodes 1 and 2, and solving for v o /v i yields R. Dutton, B. Murmann 2 EE114 (HO #10) () () [] () gd gs db gd db gs i gd i m i gd gs gd db m gd m i o C C C C C C R R s RC R g R C C R C C s g C s R g ) s ( v ) s ( v + + + + + + + + = 2 1
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 Issue We could now in principle use this expression to plot the frequency response of the circuit and compute the 3-dB bandwidth – The result would match the Spice simulation result exactly There are two issues with going in this direction for hand analysis – The procedure is quite tedious… • Imagine how complex the equations would get for a multi- transistor circuit – The derived expression is useless for reasoning about the R. Dutton, B. Murmann 3 circuit from an intuitive design perspective • By looking at this equation we cannot easily tell what exactly limits the bandwidth, or how we can improve it EE114 (HO #11) Simulation Result from Last Lecture Want to have a method that let’s us estimate the dominant pole quickly using intuitive Non-dominant, high-frequency poles and zeros may or may not be important methods – Without running into high entropy expressions that tell us things we are not interested in… – If they are, it may be OK to do a little more work (see material on feedback circuits, later in this course) 0 20 ] Dominant pole Non-dominant pole(s) and ero(s
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/09/2009 for the course EE 114 at Stanford.

Page1 / 10

ho11.l08_miller - Miller Approximation R Dutton B Murmann...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online