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Product details

Parameters

Common mode voltage (Max) (V) 36 Common mode voltage (Min) (V) 0 Input offset (+/-) (Max) (uV) 10 Input offset drift (+/-) (Typ) (uV/C) 0.02 Gain (V/V) 1 Gain error (%) 0.1 Gain error drift (+/-) (Max) (ppm/°C) 50 CMRR (Min) (dB) 126 Bandwidth (kHz) 3.5 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.42 Digital interface I2C, SMBus Features Alert Function, Bi-directional, Low-side Capable Resolution (Bits) 16 Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Current/voltage/power monitors

Package | Pins | Size

VSSOP (DGS) 10 9 mm² 3 x 3 open-in-new Find other Current/voltage/power monitors

Features

  • Senses Bus Voltages From 0 V to 36 V
  • High-Side or Low-Side Sensing
  • Reports Current, Voltage, and Power
  • High Accuracy:
    • 0.1% Gain Error (Max)
    • 10 µV Offset (Max)
  • Configurable Averaging Options
  • 16 Programmable Addresses
  • Operates from 2.7-V to 5.5-V Power Supply
  • 10-Pin, DGS (VSSOP) Package
open-in-new Find other Current/voltage/power monitors

Description

The INA226 is a current shunt and power monitor with an I2C™- or SMBUS-compatible interface. The device monitors both a shunt voltage drop and bus supply voltage. Programmable calibration value, conversion times, and averaging, combined with an internal multiplier, enable direct readouts of current in amperes and power in watts.

The INA226 senses current on common-mode bus voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device operates from a single 2.7-V to 5.5-V supply, drawing a typical of 330 µA of supply current. The device is specified over the operating temperature range between –40°C and 125\xC2°C and features up to 16 programmable addresses on the I2C-compatible interface.

open-in-new Find other Current/voltage/power monitors
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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet INA226 High-Side or Low-Side Measurement, Bi-Directional Current and Power Monitor with I2C Compatible Interface datasheet (Rev. A) Sep. 19, 2014
E-book Simplifying Current Sensing (Rev. A) Jan. 09, 2020
Technical articles How current sensors help monitor and protect the world’s wireless infrastructure Dec. 30, 2019
Application note Improving Power Amplifier Efficiency with Current Monitors Dec. 20, 2019
Application note Current Sensing Applications in Communication Infrastructure Equipment Sep. 19, 2019
Application note Precision, Low-Side Current Measurement (Rev. B) Mar. 06, 2019
Application note External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) Feb. 19, 2019
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application note Integrating a Current Sense Resistor With a Current Sense Amplifier (Rev. B) Jul. 20, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Selection guide Current Sense Amplifiers (Rev. D) Apr. 04, 2018
User guide IMETER-BOOST User's Guide (Rev. A) Mar. 09, 2018
User guide –48-V Telecom Current, Voltage, and Power Sense With Isolation Reference Design (Rev. A) Sep. 28, 2017
Application note Extending Common-Mode Range of Current-Sense Amplifiers Jul. 06, 2017
Application note Digital Interfaces for Current Sensing Devices Jun. 30, 2017
Technical articles System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application note Energy and Power Monitoring with Digital Current Sensors May 25, 2017
Application note Integrated, Current Sensing Analog-to-Digital Converter Dec. 21, 2016
Application note Integrating The Current Sensing Signal Path (Rev. A) Dec. 02, 2016
Technical articles Why should you care about overcurrent protection in your system? Jun. 16, 2016
White paper Overcurrent protection enables more efficient and reliable systems May 16, 2016
Application notes Applying I²C Compatible Temperature Sensors in Systems with Slow Clock Edges Dec. 01, 2015
Application note Understanding the I2C Bus Jun. 30, 2015
Application note System telemetry: What, why and how? Apr. 11, 2014
User guide INA226EVM User Guide Jun. 24, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
249
Description

The ADC3541 evaluation module (EVM) is a platform that demonstrates the performance of the ultra-low-power, high-linearity ADC3541 product. Onboard voltage regulation and flexible analog input options allow for easy evaluation for many different applications.

Interfacing to the TSW1400EVM (sold (...)

Features
  • Parallel and serial CMOS interface
  • USB powered with onboard power regulation
  • Pin compatible with ADC354x products
  • THS4541 FDA and balun-coupled inputs allow for flexible evaluation
  • TSW1400EVM and high-speed data converter pro software (DATACONVERTERPRO-SW) allow for easy data capture
  • FMC connector allows (...)
EVALUATION BOARD Download
249
Description

The ADC3643 evaluation module (EVM) demonstrates the performance of the ADC3643, which is an ultra-low-power, high-linearity, analog-to-digital converter (ADC). Onboard voltage regulation and flexible analog input options allow easy evaluation for many different applications.

For a complete (...)

Features
  • Parallel/serial CMOS interface
  • USB powered with onboard power regulation
  • Pin compatible with ADC364x products
  • THS4541 FDA and Balun-coupled inputs allow for flexible evaluation
  • TSW1400EVM and DATACONVERTERPRO-SW allow for easy data capture
  • FMC connector allows for easy integration with FPGA development (...)
EVALUATION BOARD Download
249
Description

The ADC3660 evaluation module (EVM) demonstrates the performance of the ADC3660, which is an ultra-low-power, high-linearity, analog-to-digital converter (ADC). Onboard voltage regulation and flexible analog input options allow easy evaluation for many different applications.

For a complete (...)

Features
  • Serial CMOS interface
  • USB powered with onboard power regulation
  • Pin compatible with ADC364x products
  • THS4541 FDA and Balun-coupled inputs allow for flexible evaluation
  • TSW1400EVM and DATACONVERTERPRO-SW allow for easy data capture
  • FMC connector allows for easy integration with FPGA development platforms
EVALUATION BOARD Download
Description
The IMETER-BOOST is a BoosterPack that can be added to LaunchPads to allow customers to evaluate their actual power consumption figures, which can help users debug and analyze their software. Utilizing the CC3200 HTTP Server abilities, the IMETER-BOOST when connected to a CC3200-LAUNCHXL Launchpad (...)
Features
  • Remote data acquisition
  • Cloud connectivity
  • Big data collection for use-case analysis
  • Power profile generation and comparison
  • Usage of standard presentation and charting tools (e.g Plot.ly, excel)
EVALUATION BOARD Download
75
Description

The INA226 is a current shunt and power monitor with an I2C/SMBus -compatible interface. The device monitors both a shunt voltage drop and bus supply voltage.

The INA226EVM is a compact, easy-to-use platform for evaluating the main features and performance of the INA226 Current Shunt Monitor across (...)

Features
  • USB Power and I/O
  • Small Form Factor
  • Simple Software Interface
EVALUATION BOARD Download
819
Description

The AM65x industrial development kit (IDK) is a development platform for evaluating the industrial communication and control capabilities of Sitara™ AM65x processors for applications in factory automation, drives, robotics, grid infrastructure, and more. AM65x processors include three PRU-ICSS (...)

Features
  • Up to 6 industrial gigabit Ethernet ports and 1 standard gigabit Ethernet port that can be used concurrently
  • 4GB DDR4 with ECC
  • Profibus connection and industrial I/O header
  • On-board 16GB eMMC
  • On-board 512Mb OSPI flash
  • 2-lane PCIe Gen3.1, USB 2.0 and CSI-2 interfaces
EVALUATION BOARD Download
149
Description

The TPS23523 evaluation module (TPS23523EVM-863) contains evaluation and reference circuitry for the TPS23523, which is a low side Hot Swap and Oring controller targeted at telecom applications.

Features
  • Inrush current conrol
  • Hot Swap output short circuit protection
  • Undervoltage and Overvoltage protection
  • Lightning Surge support

Software development

CODE EXAMPLE OR DEMO Download
SBOC410.ZIP (2080 KB)
GUI FOR EVALUATION MODULE (EVM) Download
SBOC409.ZIP (89834 KB)

Design tools & simulation

SIMULATION MODEL Download
SBOM458.ZIP (34 KB) - IBIS Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
CALCULATION TOOL Download
SBOR020.ZIP (483 KB)

Reference designs

REFERENCE DESIGNS Download
40 V to 400 V Uni-directional Current/Voltage/Power Monitoring Reference Design
TIDA-00528 This verified design can accurately measure current, voltage and power on a bus as high as 400 V using an I2C- or SMBUS-compatible interface. This design is targeted towards industrial applications where there is a need to measure system current accurately with bus voltages greater than 40 Volts (...)
document-generic Schematic
REFERENCE DESIGNS Download
-48V Telecom Current/Voltage/Power Sense with Isolation
TIDA-00313 This verified design can accurately measure current, voltage and power on a bus that carries -48V and is able to provide this data using an I²C compatible interface. This design is targeted for Telecom applications because the most common Telecom equipment’s are fed with this negative (...)
document-generic Schematic
REFERENCE DESIGNS Download
600V Uni-directional Current/Voltage/Power Monitoring for Solar Smart Combiner Box Reference Design
TIDA-00639 — The TIDA-00639 reference design is a non-isolated high-side current and voltage sensing design for a smart combiner box in a grounded or ungrounded system.  The non-isolated current sensing topology enables accurate power monitoring for high voltage systems.  This design is optimized for (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
VSSOP (DGS) 10 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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