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INA3221 Datasheet(PDF) 2 Page - Texas Instruments

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Part # INA3221
Description  Triple-Channel, High-Side Measurement, Shunt and Bus Voltage Monitor with I2C- and SMBUS-Compatible Interface
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

INA3221 Datasheet(HTML) 2 Page - Texas Instruments

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INA3221
SBOS576B – MAY 2012 – REVISED MARCH 2016
www.ti.com
Product Folder Links: INA3221
Submit Documentation Feedback
Copyright © 2012–2016, Texas Instruments Incorporated
Table of Contents
1
Features .................................................................. 1
2
Applications ........................................................... 1
3
Description ............................................................. 1
4
Revision History..................................................... 2
5
Device Comparison Table..................................... 4
6
Pin Configuration and Functions ......................... 4
7
Specifications......................................................... 5
7.1
Absolute Maximum Ratings ...................................... 5
7.2
ESD Ratings.............................................................. 5
7.3
Recommended Operating Conditions ....................... 5
7.4
Thermal Information .................................................. 5
7.5
Electrical Characteristics........................................... 6
7.6
Typical Characteristics .............................................. 7
8
Detailed Description ............................................ 10
8.1
Overview ................................................................. 10
8.2
Functional Block Diagram ....................................... 10
8.3
Feature Description................................................. 11
8.4
Device Functional Modes........................................ 16
8.5
Programming .......................................................... 20
8.6
Register Maps ......................................................... 24
9
Application and Implementation ........................ 36
9.1
Application Information............................................ 36
9.2
Typical Application ................................................. 36
10
Power Supply Recommendations ..................... 38
11
Layout................................................................... 38
11.1
Layout Guidelines ................................................. 38
11.2
Layout Example .................................................... 38
12
Device and Documentation Support ................. 39
12.1
Device Support...................................................... 39
12.2
Documentation Support ....................................... 39
12.3
Community Resources.......................................... 39
12.4
Trademarks ........................................................... 39
12.5
Electrostatic Discharge Caution ............................ 39
12.6
Glossary ................................................................ 39
13
Mechanical, Packaging, and Orderable
Information ........................................................... 39
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (June 2013) to Revision B
Page
Added Device Informationand ESD Ratings tables, and Feature Description, Device Functional Modes, Application
and Implementation, Power Supply Recommendations, Layout, Device and Documentation Support, and
Mechanical, Packaging, and Orderable Information sections ................................................................................................ 1
Deleted trace from SDA to SCL, and added missing connector dot to VS in front-page diagram ........................................ 1
Added (VIN+) + (VIN–) / 2 to common-mode analog inputs in the Absolute Maximum Ratings table ..................................... 5
Deleted VBUS from analog inputs in Absolute Maximum Ratings table ............................................................................... 5
Added operating temperature to Absolute Maximum Ratings table ....................................................................................... 5
Changed all VSENSE to VSHUNT throughout data sheet for consistency.................................................................................... 6
Changed "Status register" to "Mask/Enable register" to clarify register name in Basic ADC Functions section ................. 11
Changed Critical Alert section text for clarity. ...................................................................................................................... 12
Added Summation Control Function section ........................................................................................................................ 12
Changed external "RPU" to "RPU_ext" in Figure 20 ................................................................................................................. 14
Changed Multiple Channel Monitoring section text for clarity. ............................................................................................ 17
Added X and Y axis labels to Figure 25 ............................................................................................................................... 18
Changed "bidirectional" to "I/O" in second paragraph of Bus Overview section .................................................................. 20
Changed VS+ to VS in Table 1.............................................................................................................................................. 20
Changed references in Figure 30 to point to correct notes .................................................................................................. 22
Changed Figure 31 ............................................................................................................................................................... 23
Changed values in Table 2, Bus Timing Definitions............................................................................................................. 23
Added data valid time to Table 2, Bus Timing Definitions.................................................................................................... 23
Changed fall time to split data and clock times in Table 2, Bus Timing Definitions ............................................................. 23
Deleted rise time for data in Table 2, Bus Timing Definitions .............................................................................................. 23
Deleted trace from SDA to SCL, and added missing connector dot to VS in Figure 52 ...................................................... 36


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