Datasheet AD8232 (Analog Devices) - 9

Data Sheet AD8232 4.0 0.8 IB 3.5 IOS 0.7 3.0 0.6 ) ) A A n (n ( 2.5 0.5 T T N N E E R 2.0 0.4 R RR U C 1.5 0.3 CU T E AS 1.0 0.2 BI T U 0.5 0.1 T OFFS P U IN P 0 0 IN 0.5V/DIV 100µs/DIV
5 1 0
–0.5 –0.1
0866- 1
–1.0 –0.2
8
–40 –20 –0 20 40 60 80 100
01
TEMPERATURE (°C)
866- 10 Figure 15. Instrumentation Amplifier Large Signal Pulse Response Figure 18. Instrumentation Amplifier Input Bias Current and Input Offset Current vs. Temperature
1.5 0.5 0.4 1.0 0.3 ) 0.2 V 0.5 ) ( G (% 0.1 IN R W 0 S 0 T RRO U E P T IN –0.1 A –0.5 OU G –0.2 –0.3 –1.0 –40-°C +25°C +85°C –0.4 –1.5 –0.5 100 1k 10k 100k 1M
-016
–40 –20 0 20 40 60 80 100
-019
LOAD (Ω) TEMPERATURE (°C)
10866 10866 Figure 16. Instrumentation Amplifier Output Swing vs. Load Figure 19. Instrumentation Amplifier Gain Error vs. Temperature
0.4 50 40 ) 0.3 V m 30 ( T 0.2 E S 20 F F 0.1 ) O 10 T /V V U µ P 0 ( 0 N R I R G N –10 –0.1 CM KI C O –20 –0.2 BL –30 DC –0.3 –40 –0.4 –50 –40 –20 0 20 40 60 80 100
-017
–40 –20 0 20 40 60 80 100
-020
TEMPERATURE (°C) TEMPERATURE (°C)
10866 10866 Figure 17. Instrumentation Amplifier DC Blocking Input Offset Drift Figure 20. Instrumentation Amplifier CMRR vs. Temperature Rev. C | Page 9 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