Temperature Sensor. ADT7410 Datasheet

ADT7410 Sensor. Datasheet pdf. Equivalent

Part ADT7410
Description 16-Bit Digital I2C Temperature Sensor
Feature Data Sheet ±0.5°C Accurate, 16-Bit Digital I2C Temperature Sensor ADT7410 FEATURES High performanc.
Manufacture Analog Devices
Datasheet
Download ADT7410 Datasheet




ADT7410
Data Sheet
±0.5°C Accurate, 16-Bit Digital
I2C Temperature Sensor
ADT7410
FEATURES
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 temperature 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: −55°C to +150°C
Voltage range: 2.7 V to 5.5 V
Programmable interrupts
Critical overtemperature interrupt
Overtemperature/undertemperature interrupt
I2C-compatible interface
8-lead narrow SOIC RoHS-compliant package
APPLICATIONS
Medical equipment
Environmental control systems
Computer thermal monitoring
Thermal protection
Industrial process control
Power system monitors
Hand-held applications
GENERAL DESCRIPTION
The ADT7410 is a high accuracy digital temperature sensor in a
narrow SOIC package. It contains a band gap temperature reference
and a 13-bit ADC to monitor and digitize the temperature to a
0.0625°C resolution. The ADC resolution, by default, is set to
13 bits (0.0625°C). This can be changed to 16 bits (0.0078°C) by
setting Bit 7 in the configuration register (Register Address 0x03).
The ADT7410 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 typi-
cally 210 μA. The ADT7410 has a shutdown mode that powers
down the device and offers a shutdown current of typically 2 μA.
The ADT7410 is rated for operation over the −55°C to +150°C
temperature range.
Pin A0 and Pin A1 are available for address selection, giving the
ADT7410 four possible I2C addresses. 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.
TEMPERATURE
VALUE
REGISTER
CONFIGURATION
REGISTER
TCRIT
REGISTER
THIGH
REGISTER
TLOW
REGISTER
THYST
REGISTER
FUNCTIONAL BLOCK DIAGRAM
VDD
8
ADT7410
INTERNAL
OSCILLATOR
TCRIT
INTERNAL
REFERENCE
TEMPERATURE
SENSOR
Σ-Δ
MODULATOR
THIGH
6 CT
5 INT
POINTER
REGISTER
FILTER
LOGIC
TLOW
A0 3
A1 4
I2C INTERFACE
1 SCL
2 SDA
7
GND
Figure 1.
Rev. C
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ADT7410
ADT7410
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
I2C Timing Specifications............................................................ 4
Absolute Maximum Ratings............................................................ 5
ESD Caution.................................................................................. 5
Pin Configurations 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
Address Pointer Register ........................................................... 13
REVISION HISTORY
9/2017—Rev. B to Rev. C
Removed 16-Lead LFCSP............................................. Throughout
Changes to Table 3............................................................................ 5
Deleted Figure 5; Renumbered Sequentially................................. 6
Changes to Table 4............................................................................ 6
Changes to Table 6.......................................................................... 13
Updated Outline Dimensions, Deleted Figure 24 ...................... 24
Changes to Ordering Guide .......................................................... 24
7/2016—Rev. A to Rev. B
Added 16-Lead LFCSP.......................................................Universal
Changes to Table 3............................................................................ 5
Added Figure 5; Renumbered Sequentially .................................. 6
Changes to Table 4............................................................................ 6
Changes to Table 9.......................................................................... 13
Changes to Table 10........................................................................ 14
Changes to Interrupt Mode Section and Figure 20.................... 21
Data Sheet
Temperature Value Registers .................................................... 13
Status Register............................................................................. 14
Configuration Register .............................................................. 14
THIGH Setpoint Registers............................................................. 15
TLOW Setpoint Registers.............................................................. 15
TCRIT Setpoint Registers.............................................................. 15
THYST Setpoint Register............................................................... 16
ID Register................................................................................... 16
Serial Interface ................................................................................ 17
Serial Bus Address ...................................................................... 17
Writing Data ............................................................................... 18
Reading Data............................................................................... 19
Reset ............................................................................................. 19
General Call ................................................................................ 19
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
Changes to Figure 21...................................................................... 22
Updated Outline Dimensions ....................................................... 24
Changes to Ordering Guide .......................................................... 24
12/2011—Rev. 0 to Rev. A
Changes to Features Section ............................................................1
Changes to Table 1.............................................................................3
Changes to Figure 5...........................................................................7
Changes to One-Shot Mode Section and 1 SPS Mode
Section.............................................................................................. 10
Changes to Shutdown Section ...................................................... 11
Changes to Table 8 and Table 9 .................................................... 13
Changes to Table 10 and Table 11 ................................................ 14
Changes to Ordering Guide .......................................................... 24
4/2009—Revision 0: Initial Version
Rev. C | Page 2 of 24







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