13-1 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Chapter Thirteen Operational Amplifier Circuits

13-2 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure 13.2 A simple bipolar operational amplifier

13-3 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure 13.3 Equivalent circuit, 741 op-amp

13-4 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure 13.5 Bias circuit and input stage portion of 741 op-amp circuit

13-5 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure 13.7 Reference circuit and gain stage, 741 op-amp

13-6 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure 13.8 Basic output stage, 741 op-amp, showing currents and voltages

13-7 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure 13.9 Output stage, 741 op-amp with short-circuit protection devices

13-8 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure MC14573 CMOS op-amp equivalent circuit

13-9 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure (a) Classical cascode stage; (b) folded-cascode stage

13-10 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure CMOS folded cascode amplifier

13-11 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure CMOS current-mirror op-amp

13-12 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure BICMOS folded cascode amplifier

13-13 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure CA3140 BICMOS op-amp equivalent circuit

13-14 McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved. Figure Bias circuit, CA3140 BICMOS op-amp