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INA226-Q1AEC-Q100, 36V, 16-Bit, Ultra-Precise, I2C Output Current, Voltage, and Power Monitor With Alert
SBOS743B
July 2015 – September 2024
INA226-Q1
PRODUCTION DATA
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INA226-Q1AEC-Q100, 36V, 16-Bit, Ultra-Precise, I2C Output Current, Voltage, and Power Monitor With Alert
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Basic ADC Functions
6.3.1.1
Power Calculation
6.3.1.2
Alert Pin
6.4
Device Functional Modes
6.4.1
Averaging and Conversion Time Considerations
6.4.2
Filtering and Input Considerations
6.5
Programming
6.5.1
Programming the Calibration Register
6.5.2
Programming the Power Measurement Engine
6.5.2.1
Calibration Register and Scaling
6.5.3
Simple Current Shunt Monitor Usage (No Programming Necessary)
6.5.4
Default Settings
6.5.5
Bus Overview
6.5.5.1
Serial Bus Address
6.5.5.2
Serial Interface
6.5.5.3
Writing to and Reading From the INA226-Q1
6.5.5.3.1
High-Speed I2C Mode
6.5.5.4
SMBus Alert Response
7
Registers
7.1
Register Maps
7.1.1
Configuration Register (00h) (Read/Write)
7.1.2
Shunt Voltage Register (01h) (Read-Only)
7.1.3
Bus Voltage Register (02h) (Read-Only) #GUID-792F23A7-1E45-4FB9-9334-0BF769622DE4/SBOS5477597
7.1.4
Power Register (03h) (Read-Only)
7.1.5
Current Register (04h) (Read-Only)
7.1.6
Calibration Register (05h) (Read/Write)
7.1.7
Mask/Enable Register (06h) (Read/Write)
7.1.8
Alert Limit Register (07h) (Read/Write)
7.1.9
Manufacturer ID Register (FEh) (Read-Only)
7.1.10
Die ID Register (FFh) (Read-Only)
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
High-Side Sensing Circuit Application
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curves
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Device Support
9.1.1
Development Support
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DGS|10
MPDS035C
Thermal pad, mechanical data (Package|Pins)
Orderable Information
sbos743b_oa
sbos743b_pm
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Data Sheet
INA226-Q1
AEC-Q100, 36V, 16-Bit, Ultra-Precise, I
2
C Output Current, Voltage, and Power Monitor With Alert
1
Features
AEC-Q100 qualified with the following results:
Device temperature grade 1: –40°C to 125°C
Device HBM ESD classification 2
Device CDM ESD classification C4B
Functional Safety-Capable
Documentation available to aid functional safety system design
Senses bus voltages from 0V to 36V
High-side or low-side sensing
Reports current, voltage, and power
High accuracy:
Gain error: 0.1% (maximum)
Offset: 10μV (maximum)
Configurable averaging options
16 programmable addresses
Operates from 2.7V to 5.5V power supply
10-pin DGS (VSSOP) package