op_amps详细介绍
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2014-02-11
22:43:40
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THE OP AMP
CHAPTER 1: THE OP AMP
INTRODUCTION 1.1
SECTION 1.1: OP AMP OPERATION 1.3
INTRODUCTION 1.3
VOLTAGE FEEDBACK (VFB) MODEL 1.3
BASIC OPERATION 1.4
INVERTING AND NONINVERTING CONFIGURATIONS 1.5
OPEN-LOOP GAIN 1.9
GAIN BANDWIDTH PRODUCT 1.11
STABILITY CRITERIA 1.11
PHASE MARGIN 1.13
CLOSED-LOOP GAIN 1.13
SIGNAL GAIN 1.14
NOISE GAIN 1.14
LOOP GAIN 1.15
BODE PLOT 1.16
CURRENT FEEDBACK (CFB) MODEL 1.17
DIFFERENCES FROM VFB 1.17
HOW TO CHOOSE BETWEEN VFB AND CFB 1.19
SUPPLY VOLTAGES 1.19
SINGLE-SUPPLY CONSIDERATIONS 1.20
CIRCUIT DESIGN CONSIDERATIONS FOR SINGLE-
SUPPLY SYSTEMS 1.23
RAIL-TO-RAIL 1.25
PHASE REVERSAL 1.25
LOW POWER AND MICROPOWER 1.25
PROCESSES 1.26
EFFECTS OF OVERDRIVE ON OP AMP INPUTS 1.27
SECTION 1.2: OP AMP SPECIFICATIONS 1.29
INTRODUCTION 1.29
DC SPECIFICATIONS 1.30
OPEN-LOOP GAIN 1.30
OPEN-LOOP TRANSRESISTANCE OF A CFB OP AMP 1.32
OFFSET VOLTAGE 1.33
OFFSET VOLTAGE DRIFT 1.33
DRIFT WITH TIME 1.33
SECTION 1.2: OP AMP SPECIFICATIONS (cont.)
CORRECTION FOR OFFSET VOLTAGE 1.34
DigiTrim™ TECHNOLOGY 1.34
EXTERNAL TRIM 1.36
INPUT BIAS CURRENT 1.38
INPUT OFFSET CURRENT 1.38
COMPENSATING FOR BIAS CURRENT 1.39
CALCULATING TOTAL OUTPUT OFFSET ERROR DUE TO
IB AND VOS 1.41
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