Datasheet AD8235 (Analog Devices) - 2

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AD8235 Data Sheet TABLE OF CONTENTS
Features .. 1  Shutdown Feature ... 15  Applications ... 1  Layout Recommendations .. 15  General Description ... 1  Reference Terminal .. 16  Connection Diagram ... 1  Power Supply Regulation and Bypassing .. 16  Pin Configuration ... 1  Input Bias Current Return Path ... 17  Revision History ... 2  Input Protection ... 17  Specifications ... 3  RF Interference ... 17  Absolute Maximum Ratings .. 7  Common-Mode Input Voltage Range ... 18  Thermal Resistance .. 7  Applications Information .. 19  Pin Configuration and Function Descriptions ... 8  AC-Coupled Instrumentation Amplifier .. 19  Typical Performance Characteristics ... 9  Low Power Heart Rate Monitor ... 19  Theory of Operation .. 14  Outline Dimensions ... 20  Basic Operation .. 14  Ordering Guide .. 20  Gain Selection ... 14 
REVISION HISTORY 9/2016—Rev. 0 to Rev. A
Updated Outline Dimensions ... 20
8/2009—Revision 0: Initial Version
Rev. A | Page 2 of 20 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION CONNECTION DIAGRAM PIN CONFIGURATION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BASIC OPERATION GAIN SELECTION SHUTDOWN FEATURE LAYOUT RECOMMENDATIONS Pad Opening Pad Type Pad Finish Board Thickness Grounding REFERENCE TERMINAL POWER SUPPLY REGULATION AND BYPASSING INPUT BIAS CURRENT RETURN PATH INPUT PROTECTION RF INTERFERENCE COMMON-MODE INPUT VOLTAGE RANGE APPLICATIONS INFORMATION AC-COUPLED INSTRUMENTATION AMPLIFIER LOW POWER HEART RATE MONITOR OUTLINE DIMENSIONS ORDERING GUIDE