Datasheet ADT7312 (Analog Devices) - 2

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ADT7312 Data Sheet TABLE OF CONTENTS
Features .. 1  Temperature Value Register .. 15  Applications ... 1  ID Register... 15  General Description ... 1  TCRIT Setpoint Register ... 15  Product Highlights ... 1  THYST Setpoint Register ... 16  Functional Block Diagram .. 1  THIGH Setpoint Register .. 16  Revision History ... 2  TLOW Setpoint Register ... 16  Specifications ... 3  Serial Interface .. 17  SPI Timing Specifications ... 4  SPI Command Byte .. 17  Absolute Maximum Ratings .. 5  Writing Data ... 18  ESD Caution .. 5  Reading Data ... 19  Pad Configuration and Function Descriptions .. 6  Interfacing to DSPs or Microcontrollers ... 19  Die Bond Pad Coordinates .. 7  Resetting the Serial Interface .. 19  Typical Performance Characteristics ... 8  INT and CT Outputs .. 20  Theory of Operation .. 9  Undertemperature and Overtemperature Detection .. 20  Circuit Description... 9  Redundant Critical Generator .. 21  Converter Architecture .. 9  Applications Information .. 22  Normal Mode (Continuous Conversion Mode) .. 9  Thermal Response Time ... 22  One-Shot Mode .. 10  Supply Decoupling ... 22  1 SPS Mode .. 11  Powering from a Switching Regulator ... 22  Shutdown Mode .. 11  Temperature Monitoring ... 22  Fault Queue ... 11  Quick Guide to Measuring Temperature .. 22  Temperature Data Format ... 12  Outline Dimensions ... 23  Temperature Conversion Formulas ... 12  Ordering Guide .. 23  Registers ... 13  Automotive Products ... 23  Status Register ... 13  Configuration Register .. 14 
REVISION HISTORY 6/12—Rev. 0 to Rev. A
Changed High Output Leakage Current, IOH Maximum Parameter from 5 μA to ±1 μA ... 3
1/12—Revision 0: Initial Version
Rev. A | Page 2 of 24 Document Outline Features Applications General Description Product Highlights Functional Block Diagram Table of Contents Revision History Specifications SPI Timing Specifications Absolute Maximum Ratings ESD Caution Pad Configuration and Function Descriptions Die Bond Pad Coordinates Typical Performance Characteristics Theory of Operation Circuit Description Converter Architecture Normal Mode (Continuous Conversion 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 Status Register Configuration Register Temperature Value Register ID Register TCRIT Setpoint Register THYST Setpoint Register THIGH Setpoint Register TLOW Setpoint Register Serial Interface SPI Command Byte Writing Data Reading Data Interfacing to DSPs or Microcontrollers Resetting the Serial Interface INT and CT Outputs Undertemperature and Overtemperature Detection Comparator Mode Interrupt Mode Redundant Critical Generator Applications Information Thermal Response Time Supply Decoupling Powering from a Switching Regulator Temperature Monitoring Quick Guide to Measuring Temperature Outline Dimensions Ordering Guide Automotive Products