link to page 6 link to page 6 AD8421-EPEnhanced ProductABSOLUTE MAXIMUM RATINGSTHERMAL RESISTANCETable 2. ParameterRating θJA is specified for a device in free air using a 4-layer JEDEC Supply Voltage ±18 V printed circuit board (PCB). Output Short-Circuit Current Duration Indefinite Table 3. Maximum Voltage at −IN or +IN1 −VS + 40 V PackageθJAUnit Minimum Voltage at −IN or +IN +VS − 40 V 8-Lead MSOP 138.6 °C/W Maximum Voltage at REF2 +VS + 0.3 V Minimum Voltage at REF −V S − 0.3 V Storage Temperature Range −65°C to +150°C ESD CAUTION Operating Temperature Range −55°C to +125°C Maximum Junction Temperature 150°C ESD Human Body Model 2 kV Charged Device Model 1.25 kV Machine Model 0.2 kV 1 For voltages beyond these limits, use input protection resistors. See the AD8421 data sheet for more information. 2 There are ESD protection diodes from the reference input to each supply, so REF cannot be driven beyond the supplies in the same way that +IN and −IN can. See the AD8421 data sheet for more information. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Rev. 0 | Page 6 of 20 Document Outline Features Enhanced Product Features Pin Connection Diagram General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Outline Dimensions Ordering Guide