link to page 1 link to page 1 link to page 1 link to page 1 link to page 2 link to page 3 link to page 7 link to page 7 link to page 7 link to page 8 link to page 9 link to page 14 link to page 14 link to page 14 link to page 15 link to page 15 link to page 15 link to page 16 link to page 16 link to page 16 link to page 17 link to page 18 link to page 18 link to page 19 link to page 20 link to page 20 AD8236TABLE OF CONTENTS Features .. 1 Layout .. 15 Applications ... 1 Reference Terminal .. 15 Connection Diagram ... 1 Power Supply Regulation and Bypassing .. 15 General Description ... 1 Input Bias Current Return Path ... 16 Revision History ... 2 Input Protection ... 16 Specifications ... 3 RF Interference ... 16 Absolute Maximum Ratings .. 7 Common-Mode Input Voltage Range ... 17 Maximum Power Dissipation ... 7 Applications Information .. 18 ESD Caution .. 7 AC-Coupled Instrumentation Amplifier .. 18 Pin Configuration and Function Descriptions ... 8 Low Power Heart Rate Monitor ... 19 Typical Performance Characteristics ... 9 Outline Dimensions ... 20 Theory of Operation .. 14 Ordering Guide .. 20 Basic Operation .. 14 Gain Selection ... 14 REVISION HISTORY5/09—Revision 0: Initial Version Rev. 0 | Page 2 of 20 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION CONNECTION DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS MAXIMUM POWER DISSIPATION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BASIC OPERATION GAIN SELECTION LAYOUT 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