ADR420/ADR421/ADR423/ADR425Data SheetABSOLUTE MAXIMUM RATINGS These ratings apply at 25°C, unless otherwise noted. THERMAL RESISTANCETable 6. θJA is specified for the worst-case conditions, that is, θJA is ParameterRating specified for devices soldered in the circuit board for surface- Supply Voltage 18 V mount packages. Output Short-Circuit Duration to GND Indefinite Table 7. Storage Temperature Range −65°C to +150°C Package TypeθJAθJCUnit Operating Temperature Range −40°C to +125°C 8-Lead MSOP (RM) 190 44 °C/W Junction Temperature Range −65°C to +150°C 8-Lead SOIC (R) 130 43 °C/W Lead Temperature (Soldering, 60 sec) 300°C ESD CAUTION 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. J | Page 8 of 24 Document Outline Features Applications Pin Configuration General Description ADR42x Products Revision History Specifications ADR420 Electrical Specifications ADR421 Electrical Specifications ADR423 Electrical Specifications ADR425 Electrical Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Device Power Dissipation Considerations Basic Voltage Reference Connections Noise Performance Turn-On Time Applications Output Adjustment Reference for Converters in Optical Network Control Circuits High Voltage Floating Current Source Kelvin Connections Dual-Polarity References Programmable Current Source Programmable DAC Reference Voltage Precision Voltage Reference for Data Converters Precision Boosted Output Regulator Outline Dimensions Ordering Guide