link to page 16 AD7981Data SheetABSOLUTE MAXIMUM RATINGS Table 4. Stresses at or above those listed under Absolute Maximum ParameterRating Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these Analog Inputs or any other conditions above those indicated in the operational IN+, IN− to GND1 −0.3 V to VREF + 0.3 V or ±130 mA section of this specification is not implied. Operation beyond Supply Voltage the maximum operating conditions for extended periods may REF, VIO to GND −0.3 V to +6 V affect product reliability. VDD to GND −0.3 V to +3 V VDD to VIO +3 V to −6 V Digital Inputs to GND −0.3 V to VIO + 0.3 V ESD CAUTION Digital Outputs to GND −0.3 V to VIO + 0.3 V Storage Temperature Range −65°C to +150°C Junction Temperature2 10-Lead MSOP 175.12°C 10-Lead FLATPACK 210.13°C Thermal Impedance 10-Lead MSOP θJA 146.76°C/W θ JC 38.12°C/W 10-Lead FLATPACK θJA 107.5°C/W θJC 25.5°C/W Lead Temperature Soldering 260°C reflow as per JEDEC J-STD-020 ESD Ratings Human Body Model 2 kV Machine Model 200 V Field Induced Charged Device 1.25 kV Model 1 See the Analog Input section. A transient with a very short duration of 10 ms applied on the analog inputs, IN+ and IN−, during latch-up testing shows that these diodes can then handle a forward-biased current of 130 mA maximum. 2 The maximum junction temperature consists of the maximum specified ambient temperature plus self heating rise under normal operating conditions. Rev. B | Page 6 of 26 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION Transfer Functions TYPICAL CONNECTION DIAGRAM ANALOG INPUT DRIVER AMPLIFIER CHOICE VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE \CS MODE, 3-WIRE WITHOUT A BUSY INDICATOR \CS MODE, 3-WIRE WITH A BUSY INDICATOR \CS MODE, 4-WIRE WITHOUT A BUSY INDICATOR \CS MODE, 4-WIRE WITH A BUSY INDICATOR CHAIN MODE WITHOUT A BUSY INDICATOR CHAIN MODE WITH A BUSY INDICATOR APPLICATIONS INFORMATION PRINTED CIRCUIT BOARD (PCB) LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE