1. EE101-Lecture 9 Operational Amplifier EE101 Fall 2012 Lect 9- Kang1 Non-inverting amplifier & Inverting amplifier

2. EE101 Fall 2012 Lect 9- Kang2

3. LM741 Op Amp EE101 Fall 2012 Lect 9- Kang3 There are 20 BJTs, 11 Rs and 1 C.

4. EE101 Fall 2012 Lect 2- Kang4

5. EE101 Fall 2012 Lect 9- Kang5 Harold Stephen Black (1898-1983) Inventor of Negative Feedback In 1927 after joining Bell Labs in 1925; published his paper “Stablized feedback amplifiers” In 1934.

6. Negative Feedback EE101 Fall 2012 Lect 9- Kang6

7. LM741 Op Amp EE101 Fall 2012 Lect 9- Kang7

8. Approximate Analysis of the LM 741 Op Amp Circuit EE101 Fall 2012 Lect 9- Kang8

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11. EE101 Fall 2012 Lect 2- Kang11

12. EE101 Fall 2012 Lect 2- Kang12

13. EE101 Fall 2012 Lect 2- Kang13

14. EE101 Fall 2012 Lect 2- Kang14

15. h EE101 Fall 2012 Lect 2- Kang15

16. The common-mode rejection ratio (CMRR) of a differential amplifier (or other device) is the tendency of the devices to reject the input signals common to both input leads. A high CMRR is important in applications where the signal of interest is represented by a small voltage fluctuation superimposed on a (possibly large) voltage offset, or when relevant information is contained in the voltage difference between two signals. (An example is audio transmission over balanced lines.) Common Mode Rejection Ratio