Datasheet ADA4530-1 (Analog Devices) - 3
| Fabricante | Analog Devices |
| Descripción | Femtoampere Input Bias Current Electrometer Amplifier |
| Páginas / Página | 51 / 3 — ADA4530-1. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 3/16—Rev. 0 … |
| Revisión | B |
| Formato / tamaño de archivo | PDF / 2.0 Mb |
| Idioma del documento | Inglés |
ADA4530-1. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 3/16—Rev. 0 to Rev. A. 10/15—Revision 0: Initial Version
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ADA4530-1 Data Sheet TABLE OF CONTENTS
Features .. 1 Input Bias Current .. 32 Applications ... 1 Input Resistance .. 33 Pin Connection Diagram .. 1 Input Offset Voltage ... 33 General Description ... 1 Insulation Resistance ... 33 Revision History ... 2 Guarding .. 34 Specifications ... 3 Dielectric Relaxation .. 34 5 V Nominal Electrical Characteristics ... 3 Humidity Effects ... 36 10 V Nominal Electrical Characteristics ... 5 Contamination .. 37 15 V Nominal Electrical Characteristics ... 7 Cleaning and Handling ... 38 Absolute Maximum Ratings .. 9 Solder Paste Selection .. 38 Thermal Resistance .. 9 Current Noise Considerations .. 39 ESD Caution .. 9 Layout Guidelines ... 42 Pin Configuration and Function Descriptions ... 10 Physical Implementation of Guarding Techniques.. 42 Typical Performance Characteristics ... 11 Guard Ring .. 42 Main Amplifier, DC Performance .. 11 Guard Plane ... 42 Main Amplifier, AC Performance .. 20 Via Fence ... 43 Guard Amplifier ... 26 Cables and Connectors .. 43 Theory of Operation .. 28 Electrostatic Interferance .. 43 ESD Structure .. 28 Photodiode Interface .. 44 Input Stage ... 28 DC Error Analysis .. 44 Gain Stage .. 29 AC Error Analysis .. 44 Output Stage .. 29 Noise Analysis ... 45 Guard Buffer ... 29 Design Recommendations .. 46 Applications Information .. 30 Design Example .. 46 Input Protection .. 30 Power Supply Recommendations ... 49 Single-Supply and Rail-to-Rail Output ... 30 Power Supply Considerations ... 49 Capacitive Load Stability ... 30 Outline Dimensions ... 50 EMI Rejection Ratio ... 31 Ordering Guide .. 50 High Impedance Measurements ... 32
REVISION HISTORY 3/16—Rev. 0 to Rev. A
Changed DNC Pin to IC Pin .. Throughout Changes to Figure 1 .. 1 Changes to Figure 3 and Table 6 ... 10 Changes to Figure 29 .. 15 Changes to Theory of Operation Section .. 28 Changes to Humidity Effects Section and Figure 112 ... 36 Added Power Supply Recommendations Section, Power Supply Considerations Section, Table 16, and Figure 133 to Figure 135 .. 49
10/15—Revision 0: Initial Version
Rev. A | Page 2 of 50 Document Outline FEATURES APPLICATIONS PIN CONNECTION DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS 5 V NOMINAL ELECTRICAL CHARACTERISTICS 10 V NOMINAL ELECTRICAL CHARACTERISTICS 15 V NOMINAL ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS MAIN AMPLIFIER, DC PERFORMANCE MAIN AMPLIFIER, AC PERFORMANCE GUARD AMPLIFIER THEORY OF OPERATION ESD STRUCTURE INPUT STAGE GAIN STAGE OUTPUT STAGE GUARD BUFFER APPLICATIONS INFORMATION INPUT PROTECTION SINGLE-SUPPLY AND RAIL-TO-RAIL OUTPUT CAPACITIVE LOAD STABILITY EMI REJECTION RATIO HIGH IMPEDANCE MEASUREMENTS INPUT BIAS CURRENT INPUT RESISTANCE INPUT OFFSET VOLTAGE INSULATION RESISTANCE GUARDING DIELECTRIC RELAXATION HUMIDITY EFFECTS CONTAMINATION CLEANING AND HANDLING SOLDER PASTE SELECTION CURRENT NOISE CONSIDERATIONS LAYOUT GUIDELINES PHYSICAL IMPLEMENTATION OF GUARDING TECHNIQUES GUARD RING GUARD PLANE VIA FENCE CABLES AND CONNECTORS ELECTROSTATIC INTERFERANCE PHOTODIODE INTERFACE DC ERROR ANALYSIS AC ERROR ANALYSIS NOISE ANALYSIS DESIGN RECOMMENDATIONS DESIGN EXAMPLE POWER SUPPLY RECOMMENDATIONS POWER SUPPLY CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE
ADA4530-1 Data Sheet TABLE OF CONTENTS
Features .. 1 Input Bias Current .. 32 Applications ... 1 Input Resistance .. 33 Pin Connection Diagram .. 1 Input Offset Voltage ... 33 General Description ... 1 Insulation Resistance ... 33 Revision History ... 2 Guarding .. 34 Specifications ... 3 Dielectric Relaxation .. 34 5 V Nominal Electrical Characteristics ... 3 Humidity Effects ... 36 10 V Nominal Electrical Characteristics ... 5 Contamination .. 37 15 V Nominal Electrical Characteristics ... 7 Cleaning and Handling ... 38 Absolute Maximum Ratings .. 9 Solder Paste Selection .. 38 Thermal Resistance .. 9 Current Noise Considerations .. 39 ESD Caution .. 9 Layout Guidelines ... 42 Pin Configuration and Function Descriptions ... 10 Physical Implementation of Guarding Techniques.. 42 Typical Performance Characteristics ... 11 Guard Ring .. 42 Main Amplifier, DC Performance .. 11 Guard Plane ... 42 Main Amplifier, AC Performance .. 20 Via Fence ... 43 Guard Amplifier ... 26 Cables and Connectors .. 43 Theory of Operation .. 28 Electrostatic Interferance .. 43 ESD Structure .. 28 Photodiode Interface .. 44 Input Stage ... 28 DC Error Analysis .. 44 Gain Stage .. 29 AC Error Analysis .. 44 Output Stage .. 29 Noise Analysis ... 45 Guard Buffer ... 29 Design Recommendations .. 46 Applications Information .. 30 Design Example .. 46 Input Protection .. 30 Power Supply Recommendations ... 49 Single-Supply and Rail-to-Rail Output ... 30 Power Supply Considerations ... 49 Capacitive Load Stability ... 30 Outline Dimensions ... 50 EMI Rejection Ratio ... 31 Ordering Guide .. 50 High Impedance Measurements ... 32
REVISION HISTORY 3/16—Rev. 0 to Rev. A
Changed DNC Pin to IC Pin .. Throughout Changes to Figure 1 .. 1 Changes to Figure 3 and Table 6 ... 10 Changes to Figure 29 .. 15 Changes to Theory of Operation Section .. 28 Changes to Humidity Effects Section and Figure 112 ... 36 Added Power Supply Recommendations Section, Power Supply Considerations Section, Table 16, and Figure 133 to Figure 135 .. 49
10/15—Revision 0: Initial Version
Rev. A | Page 2 of 50 Document Outline FEATURES APPLICATIONS PIN CONNECTION DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS 5 V NOMINAL ELECTRICAL CHARACTERISTICS 10 V NOMINAL ELECTRICAL CHARACTERISTICS 15 V NOMINAL ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS MAIN AMPLIFIER, DC PERFORMANCE MAIN AMPLIFIER, AC PERFORMANCE GUARD AMPLIFIER THEORY OF OPERATION ESD STRUCTURE INPUT STAGE GAIN STAGE OUTPUT STAGE GUARD BUFFER APPLICATIONS INFORMATION INPUT PROTECTION SINGLE-SUPPLY AND RAIL-TO-RAIL OUTPUT CAPACITIVE LOAD STABILITY EMI REJECTION RATIO HIGH IMPEDANCE MEASUREMENTS INPUT BIAS CURRENT INPUT RESISTANCE INPUT OFFSET VOLTAGE INSULATION RESISTANCE GUARDING DIELECTRIC RELAXATION HUMIDITY EFFECTS CONTAMINATION CLEANING AND HANDLING SOLDER PASTE SELECTION CURRENT NOISE CONSIDERATIONS LAYOUT GUIDELINES PHYSICAL IMPLEMENTATION OF GUARDING TECHNIQUES GUARD RING GUARD PLANE VIA FENCE CABLES AND CONNECTORS ELECTROSTATIC INTERFERANCE PHOTODIODE INTERFACE DC ERROR ANALYSIS AC ERROR ANALYSIS NOISE ANALYSIS DESIGN RECOMMENDATIONS DESIGN EXAMPLE POWER SUPPLY RECOMMENDATIONS POWER SUPPLY CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE