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FIGURE 12-1 Op-amp symbols and packages. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson.

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Presentation on theme: "FIGURE 12-1 Op-amp symbols and packages. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson."— Presentation transcript:

1 FIGURE 12-1 Op-amp symbols and packages. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

2 FIGURE 12-2 Basic op-amp representations. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

3 FIGURE 12-3 Basic internal arrangement of an op-amp. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

4 FIGURE 12-4 Single-ended input mode. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

5 FIGURE 12-5 Differential input mode. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

6 FIGURE 12-6 Common-mode operation. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

7 FIGURE 12-7 Input bias current is the average of the two op-amp input currents. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

8 FIGURE 12-8 Op-amp input impedance. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

9 FIGURE 12-9 Effect of input offset current. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

10 FIGURE Op-amp output impedance. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

11 FIGURE Slew-rate measurement. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

12 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

13 FIGURE Illustration of negative feedback. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

14 FIGURE Without negative feedback, a small input voltage drives the op-amp to its output limits and it becomes nonlinear. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

15 FIGURE Noninverting amplifier. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

16 FIGURE Differential input V in - V f. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

17 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

18 FIGURE Op-amp voltage-follower. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

19 FIGURE Inverting amplifier. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

20 FIGURE Virtual ground concept and closed-loop voltage gain development for the inverting amplifier. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

21 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

22 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

23 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

24 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

25 FIGURE Inverting amplifier. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

26 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

27 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

28 FIGURE Input bias current creates output error voltage (I 1 R f ) in inverting amplifier. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

29 FIGURE Input bias current creates output error voltage in a voltage-follower. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

30 FIGURE Input bias current creates output error voltage in noninverting amplifier. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

31 FIGURE Bias current compensation in a voltage-follower. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

32 FIGURE Bias current compensation in the noninverting and inverting amplifier configurations. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

33 FIGURE Input offset voltage equivalent. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

34 FIGURE Input offset voltage compensation for a 741 op-amp. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

35 FIGURE Open-loop and closed-loop op-amp configurations. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

36 FIGURE Ideal plot of open-loop voltage gain versus frequency for a typical op-amp. The frequency scale is logarithmic. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

37 FIGURE RC lag circuit. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

38 FIGURE Op-amp represented by a gain element and an internal RC circuit. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

39 FIGURE Output voltage lags input voltage. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

40 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

41 FIGURE Op-amp open-loop frequency response. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

42 FIGURE Closed-loop gain compared to open-loop gain. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

43 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

44 FIGURE Faults in the noninverting amplifier. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

45 FIGURE Faults in the inverting amplifier. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

46 FIGURE Block diagram of basic superheterodyne AM receiver. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

47 FIGURE Audio amplifier board. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

48 FIGURE Audio amplifier schematic. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

49 FIGURE Test results for three faulty circuit boards. Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

50 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

51 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

52 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

53 FIGURE File circuits are identified with a CD logo and are in the Problems folder on your CD-ROM. Filenames correspond to figure numbers (e.g., F12-53). Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

54 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

55 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

56 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

57 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

58 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

59 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

60 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

61 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

62 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

63 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

64 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

65 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

66 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

67 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

68 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.

69 FIGURE Thomas L. Floyd Electronic Devices, 6e and Electronic Devices: Electron Flow Version, 4e Copyright ©2002 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved.


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