Datasheet AD8232 (Analog Devices) - 2
| Hersteller | Analog Devices |
| Beschreibung | Single-Lead, Heart Rate Monitor Front End |
| Seiten / Seite | 28 / 2 — AD8232. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 6/2018—Rev. B to … |
| Revision | C |
| Dateiformat / Größe | PDF / 716 Kb |
| Dokumentensprache | Englisch |
AD8232. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY. 6/2018—Rev. B to Rev. C. 3/2017—Rev. A to Rev. B. 2/2013—Rev. 0 to Rev. A
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AD8232 Data Sheet TABLE OF CONTENTS
Features .. 1 Standby Operation ... 19 Applications ... 1 Input Protection ... 19 Functional Block Diagram .. 1 Radio Frequency Interference (RFI) .. 20 General Description ... 1 Power Supply Regulation and Bypassing .. 20 Revision History ... 2 Input Referred Offsets ... 20 Specifications ... 3 Layout Recommendations .. 20 Absolute Maximum Ratings .. 5 Applications Information .. 21 ESD Caution .. 5 Eliminating Electrode Offsets .. 21 Pin Configuration and Function Descriptions ... 6 High-Pass Filtering .. 21 Typical Performance Characteristics ... 7 Low-Pass Filtering and Gain ... 23 Instrumentation Amplifier Performance Curves ... 7 Driving Analog-to-Digital Converters .. 23 Operational Amplifier Performance Curves .. 10 Driven Electrode .. 23 Right Leg Drive (RLD) Amplifier Performance Curves ... 13 Application Circuits ... 24 Reference Buffer Performance Curves .. 14 Heart Rate Measurement Next to the Heart ... 24 System Performance Curves ... 15 Exercise Application: Heart Rate Measured at the Hands .. 24 Theory of Operation .. 16 Cardiac Monitor Configuration ... 25 Architecture Overview .. 16 Portable Cardiac Monitor with Elimination of Motion Instrumentation Amplifier .. 16 Artifacts ... 25 Operational Amplifier ... 16 Packaging and Ordering Information ... 27 Right Leg Drive Amplifier ... 17 Outline Dimensions ... 27 Reference Buffer ... 17 Ordering Guide .. 27 Fast Restore Circuit .. 17 Leads Off Detection ... 18
REVISION HISTORY 6/2018—Rev. B to Rev. C
Changes to Figure 49.. 19 Changes to Figure 24 .. 10 Changes to AC Leads Off Detection Section and Standby Changes to Radio Frequency Interference (RFI) Section ... 20 Operation Section... 20 Updated Outline Dimensions ... 27 Changes to Input Referred Offsets Section ... 21 Changes to Figure 53 and High-Pass Filtering Section ... 22
3/2017—Rev. A to Rev. B
Changes to Additional High-Pass Filtering Options Section; Updated Outline Dimensions ... 27 Added Table 4 ... 23 Changes to Ordering Guide .. 27 Changes to Low-Pass Filtering and Gain Section; Added Driving
Analog-to-Digital Converters Section and Figure 61.. 24
2/2013—Rev. 0 to Rev. A
Changes to Figure 62, Figure 64, and Heart Rate Measurement Changes to Table 1 .. 4 Next to the Heart Section .. 25 Changes to Table 2 .. 6 Changes to Exercise Application: Heart Rate Measured at the Change to Figure 17 ... 9 Hands and Figure 66 .. 26 Changes to Figure 22 and Figure 25... 11 Changes to Figure 68.. 27 Changes to Figure 34 and Figure 36... 14 Changes to Figure 45, Architecture Overview Section, and
8/2012—Revision 0: Initial Version
Instrumentation Amplifier Section .. 17 Changes to Right Leg Drive Amplifier Section, Reference Buffer Section, Fast Restore Circuit Section, and Figure 48; Added Figure 46, Renumbered Sequentially ... 18 Rev. C | Page 2 of 28 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Instrumentation Amplifier Performance Curves Operational Amplifier Performance Curves Right Leg Drive (RLD) Amplifier Performance Curves Reference Buffer Performance Curves System Performance Curves Theory of Operation Architecture Overview Instrumentation Amplifier Operational Amplifier Right Leg Drive Amplifier Reference Buffer Fast Restore Circuit Leads Off Detection DC Leads Off Detection AC Leads Off Detection Standby Operation Input Protection Radio Frequency Interference (RFI) Power Supply Regulation and Bypassing Input Referred Offsets Layout Recommendations Applications Information Eliminating Electrode Offsets High-Pass Filtering Two-Pole High-Pass Filter Additional High-Pass Filtering Options Low-Pass Filtering and Gain Driving Analog-to-Digital Converters Driven Electrode Application Circuits Heart Rate Measurement Next to the Heart Exercise Application: Heart Rate Measured at the Hands Cardiac Monitor Configuration Portable Cardiac Monitor with Elimination of Motion Artifacts Packaging and Ordering Information Outline Dimensions Ordering Guide
AD8232 Data Sheet TABLE OF CONTENTS
Features .. 1 Standby Operation ... 19 Applications ... 1 Input Protection ... 19 Functional Block Diagram .. 1 Radio Frequency Interference (RFI) .. 20 General Description ... 1 Power Supply Regulation and Bypassing .. 20 Revision History ... 2 Input Referred Offsets ... 20 Specifications ... 3 Layout Recommendations .. 20 Absolute Maximum Ratings .. 5 Applications Information .. 21 ESD Caution .. 5 Eliminating Electrode Offsets .. 21 Pin Configuration and Function Descriptions ... 6 High-Pass Filtering .. 21 Typical Performance Characteristics ... 7 Low-Pass Filtering and Gain ... 23 Instrumentation Amplifier Performance Curves ... 7 Driving Analog-to-Digital Converters .. 23 Operational Amplifier Performance Curves .. 10 Driven Electrode .. 23 Right Leg Drive (RLD) Amplifier Performance Curves ... 13 Application Circuits ... 24 Reference Buffer Performance Curves .. 14 Heart Rate Measurement Next to the Heart ... 24 System Performance Curves ... 15 Exercise Application: Heart Rate Measured at the Hands .. 24 Theory of Operation .. 16 Cardiac Monitor Configuration ... 25 Architecture Overview .. 16 Portable Cardiac Monitor with Elimination of Motion Instrumentation Amplifier .. 16 Artifacts ... 25 Operational Amplifier ... 16 Packaging and Ordering Information ... 27 Right Leg Drive Amplifier ... 17 Outline Dimensions ... 27 Reference Buffer ... 17 Ordering Guide .. 27 Fast Restore Circuit .. 17 Leads Off Detection ... 18
REVISION HISTORY 6/2018—Rev. B to Rev. C
Changes to Figure 49.. 19 Changes to Figure 24 .. 10 Changes to AC Leads Off Detection Section and Standby Changes to Radio Frequency Interference (RFI) Section ... 20 Operation Section... 20 Updated Outline Dimensions ... 27 Changes to Input Referred Offsets Section ... 21 Changes to Figure 53 and High-Pass Filtering Section ... 22
3/2017—Rev. A to Rev. B
Changes to Additional High-Pass Filtering Options Section; Updated Outline Dimensions ... 27 Added Table 4 ... 23 Changes to Ordering Guide .. 27 Changes to Low-Pass Filtering and Gain Section; Added Driving
Analog-to-Digital Converters Section and Figure 61.. 24
2/2013—Rev. 0 to Rev. A
Changes to Figure 62, Figure 64, and Heart Rate Measurement Changes to Table 1 .. 4 Next to the Heart Section .. 25 Changes to Table 2 .. 6 Changes to Exercise Application: Heart Rate Measured at the Change to Figure 17 ... 9 Hands and Figure 66 .. 26 Changes to Figure 22 and Figure 25... 11 Changes to Figure 68.. 27 Changes to Figure 34 and Figure 36... 14 Changes to Figure 45, Architecture Overview Section, and
8/2012—Revision 0: Initial Version
Instrumentation Amplifier Section .. 17 Changes to Right Leg Drive Amplifier Section, Reference Buffer Section, Fast Restore Circuit Section, and Figure 48; Added Figure 46, Renumbered Sequentially ... 18 Rev. C | Page 2 of 28 Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Instrumentation Amplifier Performance Curves Operational Amplifier Performance Curves Right Leg Drive (RLD) Amplifier Performance Curves Reference Buffer Performance Curves System Performance Curves Theory of Operation Architecture Overview Instrumentation Amplifier Operational Amplifier Right Leg Drive Amplifier Reference Buffer Fast Restore Circuit Leads Off Detection DC Leads Off Detection AC Leads Off Detection Standby Operation Input Protection Radio Frequency Interference (RFI) Power Supply Regulation and Bypassing Input Referred Offsets Layout Recommendations Applications Information Eliminating Electrode Offsets High-Pass Filtering Two-Pole High-Pass Filter Additional High-Pass Filtering Options Low-Pass Filtering and Gain Driving Analog-to-Digital Converters Driven Electrode Application Circuits Heart Rate Measurement Next to the Heart Exercise Application: Heart Rate Measured at the Hands Cardiac Monitor Configuration Portable Cardiac Monitor with Elimination of Motion Artifacts Packaging and Ordering Information Outline Dimensions Ordering Guide