Transcription of CHAPTER 1: THE OP AMP - Analog Devices
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CHAPTER 1: THE OP AMP - Analog Devices
THE OP AMP CHAPTER 1: THE OP AMP INTRODUCTION SECTION : OP AMP OPERATION INTRODUCTION VOLTAGE FEEDBACK (VFB) MODEL BASIC OPERATION INVERTING AND NONINVERTING CONFIGURATIONS OPEN-LOOP GAIN GAIN BANDWIDTH PRODUCT STABILITY CRITERIA PHASE MARGIN CLOSED-LOOP GAIN SIGNAL GAIN NOISE GAIN LOOP GAIN BODE PLOT CURRENT FEEDBACK (CFB)
Figure 1.3 shows what is known as the inverting configuration. With this circuit, the output is out of phase with the input. The gain of this circuit is determined by the ratio of the resistors used and is given by: Figure 1.3: Inverting Mode Op Amp Stage Eq. 1-1 V IN = - R F /R G V OUT OP AMP R F R G G = V OUT /V IN SUMMING POINT
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