Microelectronics Circuit Analysis and Design. Differential Amplifier Intro. Differential Amplifier Intro. 12/3/2013. In this chapter, we will:

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1 Microelectronics Circuit Analysis and Design Donald A. Neamen Chapter 11 Differential Amplifiers In this chapter, we will: Describe the characteristics and terminology of the ideal differential amplifier. Describe the characteristics of and analyze: the basic bipolar differential amplifier. the basic FET differential amplifier. BJT and FET differential amplifiers with active loads. various BiCMOS circuits. Analyze the frequency response of the differential amplifier. Neamen Microelectronics, 4e Chapter 11-1 Neamen Microelectronics, 4e Chapter 11-2 Differential Amplifier Intro. Differential Amplifier Intro. Neamen Microelectronics, 4e Chapter 11-3 Neamen Microelectronics, 4e Chapter

2 Differential Amplifier Intro. Differential Amplifier Intro. Neamen Microelectronics, 4e Chapter 11-5 Neamen Microelectronics, 4e Chapter 11-6 Differential Amplifier Intro. BJT Differential-Pair Amplifier Neamen Microelectronics, 4e Chapter 11-7 Neamen Microelectronics, 4e Chapter

3 BJT Differential-Pair Amplifier BJT Differential-Pair Amplifier Neamen Microelectronics, 4e Chapter 11-9 Neamen Microelectronics, 4e Chapter BJT Differential-Pair Amplifier Variation of Q-Point for Diff-Amp Common-mode input voltage varied between +5V to -9.3V Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter

4 DC Transfer Characteristics: DC Transfer Characteristics: Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter DC Transfer Characteristics: DC Transfer Characteristics: Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter

5 Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter

6 Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter Equivalent AC Circuit: Diff. Amp. Differential-mode input Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter

7 Equivalent AC Circuit: Diff. Amp. MOSFET Differential Pair Common-mode input Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter DC Transfer Characteristics: MOSFET Differential Amplifier MOSFET Differential Amplifier Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter

8 MOSFET Differential Amplifier BJT Diff-Amplifier with 3-Transistor Active Load Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter BJT Diff-Amplifier with Active Load BJT Diff-Amplifier with Active Load Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter

9 AC Equivalent Circuit: MOSFET Diff-Amp with Active Load MOSFET Diff-Amplifier with Active Load = = ( ) Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter Darlington Pair BiMOS Diff-Amp BJT s have higher gains MOS have low (zero) bias currents Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter

10 3-Transistor Active Load Darlington Pair Gain Stage BJT Diff-Amp BJT Op-Amp Emitter- Follower Output Stage Neamen Microelectronics, 4e Chapter Neamen Microelectronics, 4e Chapter

Microelectronics Circuit Analysis and Design. Interdigitated BJT: Top and Cross-Sectional Views. Power Amps 10/11/2013. In this chapter, we will:

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