Datasheet ADT7422 (Analog Devices) - 2

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ADT7422 Data Sheet TABLE OF CONTENTS
Features .. 1  Temperature Value Registers .. 12  Applications ... 1  Status Register ... 13  General Description ... 1  Configuration Register .. 13  Product Highlights ... 1  THIGH Setpoint Registers ... 14  Functional Block Diagram .. 1  TLOW Setpoint Registers .. 14  Revision History ... 2  TCRIT Setpoint Registers .. 14  Specifications ... 3  THYST Setpoint Register ... 15  I2C Timing Specifications .. 4  ID Register... 15  Absolute Maximum Ratings .. 5  Serial Interface .. 16  Thermal Resistance .. 5  Serial Bus Address .. 16  ESD Caution .. 5  Writing Data ... 17  Pin Configuration and Function Descriptions ... 6  Reading Data ... 18  Typical Performance Characteristics ... 7  Reset ... 19  Theory of Operation .. 9  General Call .. 19  Circuit Information .. 9  INT and CT Outputs .. 20  Converter Details .. 9  Undertemperature and Overtemperature Detection .. 20  Normal Mode .. 9  Applications Information .. 22  One Shot Mode ... 9  Thermal Response Time ... 22  1 SPS Mode .. 10  Supply Decoupling ... 22  Shutdown Mode .. 10  Powering from a Switching Regulator ... 22  Fault Queue ... 10  Temperature Measurement ... 22  Temperature Data Format ... 11  Quick Guide to Measuring Temperature .. 22  Temperature Conversion Formulas ... 11  Outline Dimensions ... 23  Registers ... 12  Ordering Guide .. 23  Address Pointer Register ... 12 
REVISION HISTORY 1/2020—Revision 0: Initial Version
Rev. 0 | Page 2 of 23 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PRODUCT HIGHLIGHTS FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS I2C TIMING SPECIFICATIONS Timing Diagram ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER DETAILS NORMAL MODE ONE SHOT MODE CT and INT Operation in One Shot Mode 1 SPS MODE SHUTDOWN MODE FAULT QUEUE TEMPERATURE DATA FORMAT TEMPERATURE CONVERSION FORMULAS 16-Bit Temperature Data Format 13-Bit Temperature Data Format 10-Bit Temperature Data Format 9-Bit Temperature Data Format REGISTERS ADDRESS POINTER REGISTER TEMPERATURE VALUE REGISTERS STATUS REGISTER CONFIGURATION REGISTER THIGH SETPOINT REGISTERS TLOW SETPOINT REGISTERS TCRIT SETPOINT REGISTERS THYST SETPOINT REGISTER ID REGISTER SERIAL INTERFACE SERIAL BUS ADDRESS WRITING DATA READING DATA RESET GENERAL CALL INT AND CT OUTPUTS UNDERTEMPERATURE AND OVERTEMPERATURE DETECTION Comparator Mode Interrupt Mode APPLICATIONS INFORMATION THERMAL RESPONSE TIME SUPPLY DECOUPLING POWERING FROM A SWITCHING REGULATOR TEMPERATURE MEASUREMENT QUICK GUIDE TO MEASURING TEMPERATURE OUTLINE DIMENSIONS ORDERING GUIDE