link to page 8 link to page 16 link to page 8 Data SheetAD7685ABSOLUTE MAXIMUM RATINGSTable 6. Stresses above those listed under Absolute Maximum Ratings ParameterRating may cause permanent damage to the device. This is a stress Analog Inputs rating only; functional operation of the device at these or any IN+1, IN−1, REF GND − 0.3 V to VDD + 0.3 V other conditions above those indicated in the operational or ±130 mA section of this specification is not implied. Exposure to absolute Supply Voltages maximum rating conditions for extended periods may affect VDD, VIO to GND −0.3 V to +7 V device reliability. VDD to VIO ±7 V Digital Inputs to GND −0.3 V to VIO + 0.3 V Digital Outputs to GND −0.3 V to VIO + 0.3 V ESD CAUTION Storage Temperature Range −65°C to +150°C Junction Temperature 150°C θJA Thermal Impedance 200°C/W (MSOP-10) θJC Thermal Impedance 44°C/W (MSOP-10) Lead Temperature Vapor Phase (60 sec) 215°C Infrared (15 sec) 220°C 1 See the Analog Inputs section. Rev. D | Page 7 of 28 Document Outline Features Applications Typical Application Circuit General Description Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Typical Performance Characteristics Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Inputs Driver Amplifier Choice Voltage Reference Input Power Supply Supplying the ADC from the Reference Digital Interface CS/ Mode 3-Wire, No BUSY Indicator CS/ Mode 3-Wire with BUSY Indicator CS/ Mode 4-Wire, No BUSY Indicator CS/ Mode 4-Wire with BUSY Indicator Chain Mode, No BUSY Indicator Chain Mode with BUSY Indicator Application Hints Layout Evaluating the Performance of the AD7685 True 16-Bit Isolated Application Example Outline Dimensions Ordering Guide