Simple Differential CS Amplifier with Active Load Single Stage Op - PowerPoint PPT Presentation

4 Simple Differential CS Amplifier with Active Load • Single Stage Op Amp • Input stage of Multi-stage Op Amp IIT-Bombay Lecture 18 M. Shojaei Baghini

5 Differential Pair with Active Current Mirror Load and Internal CMFB – Small Signal CM Analysis = = g g , g g m 1 m 2 m 3 m 4 1 2 g 1 g ≈ − × = − × m 3 m 1 2 A g + + cm m 1 1 2 g R 1 2 g R g m 1 SS m 1 SS m 3 IIT-Bombay Lecture 18 M. Shojaei Baghini

6 Single Stage Cascode Op Amp – Basic Architecture (Telescopic Op Amp) IIT-Bombay Lecture 18 M. Shojaei Baghini

7 Folded Cascode Op Amp with Improved Headroom Cascode Load IIT-Bombay Lecture 18 M. Shojaei Baghini

8 Folded Cascode PMOS-NMOS Architecture IIT-Bombay Lecture 18 M. Shojaei Baghini

9 Folded Cascode NMOS-PMOS Architecture IIT-Bombay Lecture 18 M. Shojaei Baghini

10 Folded Cascode Op Amp VSS CMOS Analog Design by P. E. Allen, 2010 IIT-Bombay Lecture 18 M. Shojaei Baghini

11 Two-Stage Op Amp (Diff-Out) From CMFB IIT-Bombay Lecture 18 M. Shojaei Baghini

12 Gain Boosting in Single-Stage Op Amp IIT-Bombay Lecture 18 M. Shojaei Baghini

13 Gain Boosting in Single-Stage Op Amp (cont’d) IIT-Bombay Lecture 18 M. Shojaei Baghini

14 Gain Boosting in Single-Stage Op Amp (cont’d) IIT-Bombay Lecture 18 M. Shojaei Baghini