Datasheet AD8428 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Low Noise, Low Gain Drift, G = 2000 Instrumentation Amplifier |
| Pages / Page | 20 / 2 — AD8428. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 4/12—Rev. 0 to … |
| Revision | A |
| File Format / Size | PDF / 363 Kb |
| Document Language | English |
AD8428. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 4/12—Rev. 0 to Rev. A. 10/11—Revision 0: Initial Version
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AD8428 Data Sheet TABLE OF CONTENTS
Features .. 1 Filter Terminals... 13 Applications... 1 Reference Terminal .. 13 Functional Block Diagram .. 1 Input Voltage Range... 14 General Description ... 1 Layout .. 14 Revision History ... 2 Input Bias Current Return Path ... 15 Specifications... 3 Input Protection ... 15 Absolute Maximum Ratings.. 5 Radio Frequency Interference (RFI).. 16 Thermal Resistance .. 5 Calculating the Noise of the Input Stage... 16 ESD Caution.. 5 Applications Information .. 18 Pin Configuration and Function Descriptions... 6 Effect of Passive Network Across the Filter Terminals.. 18 Typical Performance Characteristics ... 7 Circuits Using the Filter Terminals.. 18 Theory of Operation .. 13 Outline Dimensions ... 20 Architecture... 13 Ordering Guide .. 20
REVISION HISTORY 4/12—Rev. 0 to Rev. A
Changes to Features Section and Table 1 .. 1 Added B Grade Column to Table 2 .. 3 Changes to Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, and Figure 8... 7 Changes to Filter Terminals Section .. 13 Added Applications Information Section ... 18 Changes to Ordering Guide .. 20
10/11—Revision 0: Initial Version
Rev. A | Page 2 of 20 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ARCHITECTURE FILTER TERMINALS REFERENCE TERMINAL INPUT VOLTAGE RANGE LAYOUT Common-Mode Rejection Ratio over Frequency Power Supplies and Grounding Reference Pin INPUT BIAS CURRENT RETURN PATH INPUT PROTECTION IMAX Input Voltages Beyond the Rails Large Differential Input Voltage at High Gain RADIO FREQUENCY INTERFERENCE (RFI) CALCULATING THE NOISE OF THE INPUT STAGE Source Resistance Noise Voltage Noise of the Instrumentation Amplifier Current Noise of the Instrumentation Amplifier Total Noise Density Calculation APPLICATIONS INFORMATION EFFECT OF PASSIVE NETWORK ACROSS THE FILTER TERMINALS CIRCUITS USING THE FILTER TERMINALS Setting the Amplifier to Different Gains Low-Pass Filter Notch Filter Extracting the Common-Mode Voltage of the Input OUTLINE DIMENSIONS ORDERING GUIDE
AD8428 Data Sheet TABLE OF CONTENTS
Features .. 1 Filter Terminals... 13 Applications... 1 Reference Terminal .. 13 Functional Block Diagram .. 1 Input Voltage Range... 14 General Description ... 1 Layout .. 14 Revision History ... 2 Input Bias Current Return Path ... 15 Specifications... 3 Input Protection ... 15 Absolute Maximum Ratings.. 5 Radio Frequency Interference (RFI).. 16 Thermal Resistance .. 5 Calculating the Noise of the Input Stage... 16 ESD Caution.. 5 Applications Information .. 18 Pin Configuration and Function Descriptions... 6 Effect of Passive Network Across the Filter Terminals.. 18 Typical Performance Characteristics ... 7 Circuits Using the Filter Terminals.. 18 Theory of Operation .. 13 Outline Dimensions ... 20 Architecture... 13 Ordering Guide .. 20
REVISION HISTORY 4/12—Rev. 0 to Rev. A
Changes to Features Section and Table 1 .. 1 Added B Grade Column to Table 2 .. 3 Changes to Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, and Figure 8... 7 Changes to Filter Terminals Section .. 13 Added Applications Information Section ... 18 Changes to Ordering Guide .. 20
10/11—Revision 0: Initial Version
Rev. A | Page 2 of 20 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ARCHITECTURE FILTER TERMINALS REFERENCE TERMINAL INPUT VOLTAGE RANGE LAYOUT Common-Mode Rejection Ratio over Frequency Power Supplies and Grounding Reference Pin INPUT BIAS CURRENT RETURN PATH INPUT PROTECTION IMAX Input Voltages Beyond the Rails Large Differential Input Voltage at High Gain RADIO FREQUENCY INTERFERENCE (RFI) CALCULATING THE NOISE OF THE INPUT STAGE Source Resistance Noise Voltage Noise of the Instrumentation Amplifier Current Noise of the Instrumentation Amplifier Total Noise Density Calculation APPLICATIONS INFORMATION EFFECT OF PASSIVE NETWORK ACROSS THE FILTER TERMINALS CIRCUITS USING THE FILTER TERMINALS Setting the Amplifier to Different Gains Low-Pass Filter Notch Filter Extracting the Common-Mode Voltage of the Input OUTLINE DIMENSIONS ORDERING GUIDE
