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INA226

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36V, 16-bit, ultra-precise i2c output current/voltage/power monitor w/alert

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36V, 16-bit, ultra-precise i2c output current/voltage/power monitor w/alert

INA226

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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.

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Technical documentation

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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
More literature 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 notes Improving Power Amplifier Efficiency with Current Monitors Dec. 20, 2019
Application notes Current Sensing Applications in Communication Infrastructure Equipment Sep. 19, 2019
Application notes Precision, Low-Side Current Measurement (Rev. B) Mar. 06, 2019
Application notes 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 notes Integrating a Current Sense Resistor With a Current Sense Amplifier (Rev. B) Jul. 20, 2018
Selection guides Current Sense Amplifiers (Rev. D) Apr. 04, 2018
User guides IMETER-BOOST User's Guide (Rev. A) Mar. 09, 2018
User guides –48-V Telecom Current, Voltage, and Power Sense With Isolation Reference Design (Rev. A) Sep. 28, 2017
Application notes Extending Common-Mode Range of Current-Sense Amplifiers Jul. 06, 2017
Application notes 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 notes Energy and Power Monitoring with Digital Current Sensors May 25, 2017
Application notes Integrated, Current Sensing Analog-to-Digital Converter Dec. 21, 2016
Application notes 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 papers 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 notes Understanding the I2C Bus Jun. 30, 2015
Application notes System telemetry: What, why and how? Apr. 11, 2014
User guides 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 BOARDS Download
$1,146.54
Description
J6Entry, RSP and TDA2E-17 CPU Board EVM is an evaluation platform designed to speed up development efforts and reduce time to market for Infotainment  reconfigurable Digital Cluster or Integrated Digital Cockpit and ADAS applications. The CPU board integrates key peripherals such as parallel (...)
Features
  • 2GB DDR3L
  • LP8733/LP8732 Power Solution
  • On-board eMMC, NAND, NOR
  • USB3, USB2, PCIe, Ethernet, COM8Q, CAN, MLB, MicroSD and HDMI connectors
View details
EVALUATION BOARDS Download
$2,324.44
Description

The J6Entry/RSP EVM is an evaluation platform designed to speed up development efforts and reduce time to market for applications such as Infotainment, reconfigurable Digital Cluster or Integrated Digital Cockpit.

The main CPU board integrates these key peripherals such as Ethernet or HDMI, while the (...)

Features
  • 10.1" Display with capacitive Touch
  • JAMR3 Radio Tuner Application Board
  • 2GB DDR3L
  • LP8733/LP8732 Power Solution
  • On-board eMMC, NAND, NOR
  • USB3, USB2, PCIe, Ethernet, COM8Q, CAN, MLB, MicroSD and HDMI connectors
View details
EVALUATION BOARDS Download
document-generic User guide
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)
View details
EVALUATION BOARDS Download
document-generic User guide
$75.00
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
View details
EVALUATION BOARDS Download
document-generic User guide
$898.00
Description

The AM65x Evaluation Module provides a platform to quickly start evaluation of Sitara™ Arm® Cortex®-A53 AM65x Processors (AM6548, AM6546, AM6528, AM6527, AM6526) and accelerate development for HMI, networking, patient monitoring, and other industrial applications. It is a development platform based on (...)

Features
  • 3 gigabit Ethernet ports
  • 4GB DDR4 with ECC
  • On-board 16GB eMMC
  • On-board 512Mb OSPI Flash
  • 1-lane PCIe Gen3.1, USB 3.1, USB 2.0 and CSI-2 interfaces
View details
EVALUATION BOARDS Download
document-generic User guide
$1,369.00
Description
The AM65x high security (HS) evaluation module provides a platform to evaluate secure boot and other security features of Sitara™ Arm® Cortex®-A53 AM65x Processors (AM6548, AM6546, AM6528, AM6527, AM6526). It is a development platform based on the quad core Cortex-A53, dual Cortex-R5F processor that (...)
Features
  • 3 gigabit Ethernet ports
  • 4GB DDR4 with ECC
  • On-board 16GB eMMC
  • On board 512MB OSPI Flash
  • 1-lane PCIe Gen3.1, USB 3.1, USB 2.0 and CSI-2 interfaces
View details
EVALUATION BOARDS Download
document-generic User guide
$819.00
Description

Step 1: Order the IDK
Step 2: Download the Processor SDK
Step 3: Get the industrial protocol package
Step 4: Read the hardware user's guide

The AM65x Industrial Development Kit (IDK) is a development platform for evaluating the industrial communication and control capabilities of Sitara AM65x (...)

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
View details
EVALUATION BOARDS Download
document-generic User guide
Description

The DM38x Digital Video Evaluation Module (DVEVM) enables developers to start immediate evaluation of the DM38x Digital Media Processors and begin building digital video applications such as IP security cameras, action cameras, drones, video doorbells, car digital video recorders and other digital (...)

Features
  • DM388 digital media processor-based development board with 2Gb DDR3
  • Video capture and output of NTSC or PAL signals via component I/O
  • HDMI video output
  • CSI2 and parallel camera input
  • PCIe, SATA 2x, ethernet 2x, USB x2, audio, SD-card slot
View details
EVALUATION BOARDS Download
document-generic User guide
$149.00
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
View details
DEVELOPMENT KITS Download
document-generic User guide
$699.00
Description

The K2G Evaluation Module (EVM) enables developers to immediately start evaluating the 66AK2Gx - 600MHz processor, and to accelerate the development of audio, industrial motor control, smart grid protection and other high reliability, real-time compute intensive applications.  Similar to (...)

Features
  • 66AK2G02 C66x DSP+ARM A15 Processor at 600MHz
  • 2-GByte DDR3L with ECC
  • TPS659118 PMIC
  • Audio and Serial expansion headers
  • Processor SDK Linux and TI-RTOS support
  • Supports Gigabit Ethernet
View details
DEVELOPMENT KITS Download
document-generic User guide
$699.00
Description

The EVMK2GX (also known as "K2G") 1GHz Evaluation Module (EVM) enables developers to immediately start evaluating the 66AK2Gx processor family, and to accelerate the development of audio, industrial motor control, smart grid protection and other high reliability, real-time compute intensive (...)

Features
  • 66AK2G12 C66x DSP+ARM A15 Processor at 1GHz
  • 2-GByte DDR3L with ECC
  • TPS65911A PMIC
  • Audio and serial expansion headers
  • Processor SDK Linux and TI-RTOS support
View details
DEVELOPMENT KITS Download
document-generic User guide
$1,049.00
Description

The K2G 1GHz High Secure Evaluation Module (EVM) enables developers to start  evaluating and testing the programming of the  high secure developmental version of the  66AK2Gx processor, and to accelerate the next stage of secure boot product development of audio and industrial real (...)

Features
  • 66AK2G12 C66x DSP+ARM A15 Processor at 1GHz
  • 2-GByte DDR3L with ECC
  • TPS65911A PMIC
  • Audio and serial expansion headers
  • Processor SDK Linux and TI-RTOS support
View details
GUIS FOR EVALUATION MODULES (EVM) Download
SBOC409.ZIP (89834 KB)

Software development

CODE EXAMPLES & DEMOS Download
SBOC410.ZIP (2080 KB)

Design tools & simulation

SIMULATION MODELS Download
SBOM458.ZIP (34 KB) - IBIS Model
SIMULATION TOOLS 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 (...)
document-generic User guide

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 document-generic User guide
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 document-generic User guide
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 document-generic User guide

CAD/CAE symbols

Package Pins Download
VSSOP (DGS) 10 View options

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