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INA226

ACTIVE

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

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Data sheet

INA226

ACTIVE
Data sheet Order now

Product details

Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Input offset (±) (max) (µV) 10 Input offset drift (±) (max) (µV/°C) 0.1 Input offset drift (±) (typ) (µV/°C) 0.02 Voltage gain (V/V) 1 CMRR (min) (dB) 126 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.42 Digital interface I2C, SMBus Gain error (%) 0.1 Gain error drift (±) (max) (ppm/°C) 50 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable, Ultra precise Number of channels 1 Resolution (Bits) 16 Power measurement accuracy (%) 0.2 Rating Catalog Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Input offset (±) (max) (µV) 10 Input offset drift (±) (max) (µV/°C) 0.1 Input offset drift (±) (typ) (µV/°C) 0.02 Voltage gain (V/V) 1 CMRR (min) (dB) 126 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.42 Digital interface I2C, SMBus Gain error (%) 0.1 Gain error drift (±) (max) (ppm/°C) 50 Features Alert Function, Bidirectional, Intergrated Power Monitor, Low-side Capable, Ultra precise Number of channels 1 Resolution (Bits) 16 Power measurement accuracy (%) 0.2 Rating Catalog Operating temperature range (°C) -40 to 125
VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • 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
  • 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

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.

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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Type Title Date
* Data sheet INA226 High-Side or Low-Side Measurement, Bi-Directional Current and Power Monitor with I2C Compatible Interface datasheet (Rev. A) PDF | HTML 19 Sep 2014
Application brief Current Sensing Applications in Communication Infrastructure Equipment (Rev. C) PDF | HTML 08 Aug 2023
Application brief Improving Power Amplifier Efficiency With Current Monitors (Rev. B) PDF | HTML 24 Jul 2023
Application brief Integrating the Current Sensing Resistor (Rev. D) PDF | HTML 07 Apr 2023
EVM User's guide INA226EVM User's Guide PDF | HTML 13 Jan 2023
E-book An Engineer's Guide to Current Sensing (Rev. B) 12 Apr 2022
Application brief Extending Beyond the Max Common-Mode Range of Discrete Current-Sense Amplifiers (Rev. A) PDF | HTML 10 Mar 2022
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 Jan 2022
Application note Digital Interfaces for Current Sensing Devices (Rev. A) PDF | HTML 30 Sep 2021
Application brief Integrating the Current Sensing Signal Path (Rev. B) PDF | HTML 29 Sep 2021
Application brief Integrated, Current Sensing Analog-to-Digital Converter (Rev. A) PDF | HTML 28 Sep 2021
Selection guide Current Sense Amplifiers (Rev. E) 20 Sep 2021
Application note Getting Started with Digital Power Monitors (Rev. A) PDF | HTML 02 Sep 2021
Technical article How current sensors help monitor and protect the world’s wireless infrastructure PDF | HTML 30 Dec 2019
Application brief Precision, Low-Side Current Measurement (Rev. B) 06 Mar 2019
Application brief External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) 19 Feb 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
User guide IMETER-BOOST User's Guide (Rev. A) 09 Mar 2018
Design guide –48-V Telecom Current, Voltage, and Power Sense With Isolation Reference Design (Rev. A) 28 Sep 2017
Application brief Energy and Power Monitoring with Digital Current Sensors 25 May 2017
White paper Overcurrent protection enables more efficient and reliable systems 16 May 2016
Application note Applying I²C Compatible Temperature Sensors in Systems with Slow Clock Edges 01 Dec 2015
Technical article How to get started with current sense amplifiers – part 3 PDF | HTML 09 Jul 2015
Application note Understanding the I2C Bus PDF | HTML 30 Jun 2015
Technical article How to get started with current sense amplifiers – part 2 PDF | HTML 26 May 2015
Technical article How to get started with current sense amplifiers – part 1 PDF | HTML 19 May 2015
Analog Design Journal System telemetry: What, why and how? 11 Apr 2014

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