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) MODEL DIFFERENCES FROM VFB H
power supply). Since the op amp will force the differential voltage across the inputs to zero, the inverting input will also appear to be at ground. In fact, this node is often referred to as a “virtual ground.” If there is a voltage (Vin) applied to the input resistor, it will set up a current (I1) through the resistor (Rin) so that
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