link to page 7 link to page 16 AD8244Data SheetABSOLUTE MAXIMUM RATINGS Table 4. Stresses at or above those listed under Absolute Maximum Parameter Rating Ratings may cause permanent damage to the product. This is a Supply Voltage ±18 V stress rating only; functional operation of the product at these Output Short-Circuit Current Duration Indefinite or any other conditions above those indicated in the operational Maximum Voltage at IN x or OUT x1 +V section of this specification is not implied. Operation beyond S + 0.3 V Minimum Voltage at IN x or OUT x1 −V the maximum operating conditions for extended periods may S − 0.3 V Storage Temperature Range −65°C to +150°C affect product reliability. Operating Temperature Range −40°C to + 85°C THERMAL RESISTANCE Maximum Junction Temperature 150°C θ ESD JA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Human Body Model (HBM) 3 kV Charged Device Model (CDM) 1.25 kV Table 5. Thermal Resistance Machine Model (MM) 100 V Package TypeθJA Unit 1 For voltages beyond these limits, use input protection resistors. See the 10-Lead MSOP 152 °C/W Input Protection section for more information. ESD CAUTION Rev. A | Page 6 of 20 Document Outline FEATURES APPLICATIONS PIN CONFIGURATION 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 OVERVIEW GUARDING INPUT PROTECTION LAYOUT CONSIDERATIONS DIFFERENTIAL SIGNAL CHAINS LOW OUTPUT IMPEDANCE vs. FREQUENCY APPLICATIONS INFORMATION ELECTROCARDIOGRAM (ECG) FILTERING Sallen-Key Low-Pass Filter Sallen-Key High-Pass Filter Twin-T Notch Filter PHOTODIODE AMPLIFIER LOW NOISE, JFET INPUT BUFFER OUTLINE DIMENSIONS ORDERING GUIDE