OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

ADT7311WTRZ-RL

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25
Automotive, ±0.5°C Accurate, 16-Bit
Digital SPI Temperature Sensor
Data Sheet
ADT7311
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved.
FEATURES
Qualified for automotive applications
High performance
Temperature accuracy
±0.5°C from −40°C to +105°C (2.7 V to 3.6 V)
±0.4°C from −40°C to +105°C (3.0 V)
16-bit temperature resolution: 0.0078°C
Fast first conversion on power-up of 6 ms
Easy implementation
No temperature calibration/correction required by user
No linearity correction required
Low power
Power saving 1 sample per second (SPS) mode
700 μW typical at 3.3 V in normal mode
7 μW typical at 3.3 V in shutdown mode
Wide operating ranges
Temperature range: −40°C to +150°C
Voltage range: 2.7 V to 5.5 V
Programmable interrupts
Critical overtemperature interrupt
Overtemperature/undertemperature interrupt
SPI-compatible interface
8-lead narrow SOIC RoHS-compliant package
APPLICATIONS
Battery management
Climate control and infotainment
Lighting
Powertrain
Thermocouple cold junction compensation
GPS
GENERAL DESCRIPTION
The ADT7311 is a high accuracy digital temperature sensor
in a narrow 8-lead SOIC package. It contains a band gap
temperature reference and a 16-bit ADC to monitor and digitize
the temperature to a 0.0078°C resolution. The ADC resolution,
by default, is set to 13 bits (0.0625°C). The ADC resolution is a
user programmable mode that can be changed through the
serial interface.
The ADT7311 is guaranteed to operate over supply voltages from
2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is
typically 210 A. The ADT7311 has a shutdown mode that
powers down the device and offers a shutdown current of
typically 2 A. The ADT7311 is rated for operation over the
−40°C to +150°C temperature range.
The CT pin is an open-drain output that becomes active when
the temperature exceeds a programmable critical temperature
limit. The default critical temperature limit is 147°C. The INT
pin is also an open-drain output that becomes active when the
temperature exceeds a programmable limit. The INT and CT
pins can operate in either comparator or interrupt mode.
PRODUCT HIGHLIGHTS
1. Ease of use, no calibration or correction required by the user.
2. Low power consumption.
3. Excellent long-term stability and reliability.
4. Packaged in an 8-lead SOIC, RoHS-compliant package.
FUNCTIONAL BLOCK DIAGRAM
INTERNAL
REFERENCE
8
7
TEMPERATURE
SENSOR
T
HIGH
T
CRIT
T
LOW
INTERNAL
OSCILLATOR
FILTER
LOGIC
Σ-∆
MODULATOR
V
DD
GND
6
5
CT
INT
3
4
1
2
ADT7311
CS
SPI INTERFACE
TEMPERATURE
VALUE
REGISTER
CONFIGURATION,
STATUS, AND
ID REGISTERS
T
LOW
REGISTER
T
CRIT
REGISTER
T
HYST
REGISTER
T
HIGH
REGISTER
SCLK
DOUT
DIN
0
9050-001
Figure 1.
ADT7311* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
DOCUMENTATION
Data Sheet
• ADT7311: Automotive, ±0.5°C Accurate, 16-BitDigital SPI
Temperature Sensor
REFERENCE DESIGNS
• CN0281
DESIGN RESOURCES
• ADT7311 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
DISCUSSIONS
View all ADT7311 EngineerZone Discussions.
SAMPLE AND BUY
Visit the product page to see pricing options.
TECHNICAL SUPPORT
Submit a technical question or find your regional support
number.
DOCUMENT FEEDBACK
Submit feedback for this data sheet.
This page is dynamically generated by Analog Devices, Inc., and inserted into this data sheet. A dynamic change to the content on this page will not
trigger a change to either the revision number or the content of the product data sheet. This dynamic page may be frequently modified.
ADT7311 Data Sheet
Rev. 0 | Page 2 of 24
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description......................................................................... 1
Product Highlights ........................................................................... 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
Shutdown..................................................................................... 11
Fault Queue ................................................................................. 11
Temperature Data Format......................................................... 12
Temperature Conversion Formulas ......................................... 12
Registers........................................................................................... 13
Status Register............................................................................. 13
Configuration Register .............................................................. 14
Temperature Value Register...................................................... 15
ID Register................................................................................... 15
T
CRIT
Setpoint Register ............................................................... 15
T
HYST
Setpoint Register............................................................... 16
T
HIGH
Setpoint Register .............................................................. 16
T
LOW
Setpoint Register ............................................................... 16
Serial Peripheral Interface ............................................................. 17
SPI Command Byte.................................................................... 17
Writing Data ............................................................................... 18
Reading Data............................................................................... 19
Interfacing to DSPs or Microcontrollers ................................. 19
Serial Interface Reset.................................................................. 19
INT and CT Outputs...................................................................... 20
Undertemperature and Overtemperature Detection ............ 20
Applications Information.............................................................. 22
Thermal Response Time ........................................................... 22
Supply Decoupling ..................................................................... 22
Powering from a Switching Regulator..................................... 22
Temperature Monitoring........................................................... 22
Quick Guide to Measuring Temperature ................................ 22
Outline Dimensions ....................................................................... 23
Ordering Guide .......................................................................... 23
Automotive Products................................................................. 23
REVISION HISTORY
9/11—Revision 0: Initial Version
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25

ADT7311WTRZ-RL

Mfr. #:
Buy ADT7311WTRZ-RL
Manufacturer:
Analog Devices Inc.
Description:
Board Mount Temperature Sensors 0.5, C Accurate Temp SPI Interface
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet