200831421204276 - Analog CMOS Integrated Circuit Chapter...

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

View Full Document Right Arrow Icon
1 Analog CMOS Integrated Circuit Zou Zhige Spring,2008 Chapter 3-2 Single-Stage Amplifiers Zou Zhige Spring, 2008 Zou Zhige RCVLSI&S 3 Table of contents • Introduction • Common-Source Amplifiers – CS with Resistive Load – CS with diode-connected MOS load CS with Current Source Load – CS with Triode Region Load – CS with source degeneration Source follower Amplifiers • Common Gate Amplifiers • Cascode Amplifiers Zou Zhige RCVLSI&S 4 3.2.3 CS with Current Source Load A v =− g m r o1 || r o2 Assuming r o2 large, A v g m r o 1 2 μ n C ox I D W L 1 1 λ I D Zou Zhige RCVLSI&S 5 CS with Current Source Load (cont.) • Advantage of CS with current source Load : the output impedance and the minimum required V DS of M 2 are less strongly coupled than the value and voltage drop of a resistor. Home work 2 : Please do large-signal analysis of this circuit to determine the biasing range. How to increase the gain? Zou Zhige RCVLSI&S 6 CS with Current Source Load (cont.) Discussions: (1) Gain increasing: a) increase r o1 and r o2 , so increase L is an effective method. b) increase g m1 , Increasing W while keeping the V ov and L constant, g m1 increases.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/23/2011 for the course SDASD 102 taught by Professor Dsfas during the Spring '11 term at Baptist Bible PA.

Page1 / 4

200831421204276 - Analog CMOS Integrated Circuit Chapter...

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

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