ADT7310TRZ【PDF 2/24 页】IC TEMP SENSOR 16BIT SPI 8SOIC

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ADT7310

Data Sheet

Rev. A | Page 2 of 24

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications ....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications ..................................................................................... 3

SPI Timing Specifications ........................................................... 4

Absolute Maximum Ratings ............................................................ 5

ESD Caution .................................................................................. 5

Pin Configuration and Function Descriptions ............................. 6

Typical Performance Characteristics ............................................. 7

Theory of Operation ........................................................................ 9

Circuit Information ...................................................................... 9

Converter Details.......................................................................... 9

Temperature Measurement ......................................................... 9

One-Shot Mode .......................................................................... 10

1 SPS Mode .................................................................................. 10

Continuous Read Mode ............................................................. 12

Shutdown ..................................................................................... 12

Fault Queue ................................................................................. 12

Temperature Data Format ......................................................... 13

Temperature Conversion Formulas ......................................... 13

Registers ........................................................................................... 14

Status Register ............................................................................. 14

Configuration Register .............................................................. 15

Temperature Value Register ...................................................... 16

ID Register................................................................................... 16

TCRIT Setpoint Register ............................................................... 16

HYST

Setpoint Register ............................................................... 17

HIGH

Setpoint Register .............................................................. 17

LOW

Setpoint Register ............................................................... 17

Serial Interface ................................................................................ 18

SPI Command Byte .................................................................... 18

Writing Data ............................................................................... 19

Reading Data ............................................................................... 20

Interfacing to DSPs or Microcontrollers ................................. 20

Serial Interface Reset .................................................................. 20

INT and CT Outputs ...................................................................... 21

Undertemperature and Overtemperature Detection ............ 21

Applications Information .............................................................. 23

Thermal Response Time ........................................................... 23

Supply Decoupling ..................................................................... 23

Temperature Monitoring ........................................................... 23

Outline Dimensions ....................................................................... 24

Ordering Guide .......................................................................... 24

REVISION HISTORY

12/11Rev. 0 to Rev. A

Changes to Features Section............................................................ 1

Changes to Table 1 ............................................................................ 3

Changes to Figure 6 and Figure 9 ................................................... 7

Changes to Figure 11 ........................................................................ 8

Changes to One-Shot Mode Section and 1 SPS Mode

Section .............................................................................................. 10

Changes to Shutdown Section and Figure 16 ............................. 12

Changes to Table 7 .......................................................................... 14

Changes to Table 8 .......................................................................... 15

Changes to Table 9 .......................................................................... 16

Changes to Table 12, Table 13, and Table 14 ............................... 17

Changes to Ordering Guide .......................................................... 24

4/09Revision 0: Initial Version

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