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INA219 Zerø-Drift, Bidirectional Current/Power Monitor With I2C Interface
SBOS448G
August 2008 – December 2015
INA219
PRODUCTION DATA.
CONTENTS
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INA219 Zerø-Drift, Bidirectional Current/Power Monitor With I2C Interface
1
Features
2
Applications
3
Description
4
Revision History
5
Related Products
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics:
7.6
Bus Timing Diagram Definitions
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Basic ADC Functions
8.3.1.1
Power Measurement
8.3.1.2
PGA Function
8.3.1.3
Compatibility With TI Hot Swap Controllers
8.4
Device Functional Modes
8.4.1
Filtering and Input Considerations
8.5
Programming
8.5.1
Programming the Calibration Register
8.5.2
Programming the Power Measurement Engine
8.5.2.1
Calibration Register and Scaling
8.5.3
Simple Current Shunt Monitor Usage (No Programming Necessary)
8.5.4
Default Settings
8.5.5
Bus Overview
8.5.5.1
Serial Bus Address
8.5.5.2
Serial Interface
8.5.6
Writing to and Reading from the INA219
8.5.6.1
High-Speed I2C Mode
8.5.6.2
Power-Up Conditions
8.6
Register Maps
8.6.1
Register Information
8.6.2
Register Details
8.6.2.1
Configuration Register (address = 00h) [reset = 399Fh]
8.6.3
Data Output Registers
8.6.3.1
Shunt Voltage Register (address = 01h)
8.6.3.2
Bus Voltage Register (address = 02h)
8.6.3.3
Power Register (address = 03h) [reset = 00h]
8.6.3.4
Current Register (address = 04h) [reset = 00h]
8.6.4
Calibration Register
8.6.4.1
Calibration Register (address = 05h) [reset = 00h]
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Register Results for the Example Circuit
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Community Resources
12.2
Trademarks
12.3
Electrostatic Discharge Caution
12.4
Glossary
13
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
D|8
MSOI002K
DCN|8
MPDS099C
Thermal pad, mechanical data (Package|Pins)
DCN|8
PPTD193B
Orderable Information
sbos448g_oa
sbos448g_pm
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