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INA220

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26V, 12-bit, i2c output current/voltage/power monitor

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Data sheet

INA220

ACTIVE
Data sheet Order now

Product details

Common-mode voltage (max) (V) 26 Common-mode voltage (min) (V) 0 Digital interface I2C, SMBus Resolution (Bits) 12 Input offset (±) (max) (µV) 50, 100 Input offset drift (±) (max) (µV/°C) 0.5 Input offset drift (±) (typ) (µV/°C) 0.16 Voltage gain (V/V) 0.125, 0.25, 0.5, 1 CMRR (min) (dB) 120 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 3 Iq (max) (mA) 1 Gain error (%) 0.3, 0.5 Gain error drift (±) (max) (ppm/°C) 83, 167 Features Bidirectional, Intergrated Power Monitor, Low-side Capable, Programmable Gain Number of channels 1 Power measurement accuracy (%) 0.8, 1 Rating Catalog Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 26 Common-mode voltage (min) (V) 0 Digital interface I2C, SMBus Resolution (Bits) 12 Input offset (±) (max) (µV) 50, 100 Input offset drift (±) (max) (µV/°C) 0.5 Input offset drift (±) (typ) (µV/°C) 0.16 Voltage gain (V/V) 0.125, 0.25, 0.5, 1 CMRR (min) (dB) 120 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 3 Iq (max) (mA) 1 Gain error (%) 0.3, 0.5 Gain error drift (±) (max) (ppm/°C) 83, 167 Features Bidirectional, Intergrated Power Monitor, Low-side Capable, Programmable Gain Number of channels 1 Power measurement accuracy (%) 0.8, 1 Rating Catalog Operating temperature range (°C) -40 to 125
VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • High- or Low-Side Sensing
  • Senses Bus Voltages from 0 V to 26 V
  • Reports Current, Voltage, and Power
  • 16 Programmable Addresses
  • High Accuracy: 0.5% (Maximum) Over
    Temperature (INA220B)
  • User-Programmable Calibration
  • Fast (2.56-MHz) I2C- or SMBUS-Compatible
    Interface
  • VSSOP-10 Package
  • APPLICATIONS
    • Servers
    • Telecom Equipment
    • Notebook Computers
    • Power Management
    • Battery Chargers
    • Automotive
    • Power Supplies
    • Test Equipment

All other trademarks are the property of their respective owners
  • High- or Low-Side Sensing
  • Senses Bus Voltages from 0 V to 26 V
  • Reports Current, Voltage, and Power
  • 16 Programmable Addresses
  • High Accuracy: 0.5% (Maximum) Over
    Temperature (INA220B)
  • User-Programmable Calibration
  • Fast (2.56-MHz) I2C- or SMBUS-Compatible
    Interface
  • VSSOP-10 Package
  • APPLICATIONS
    • Servers
    • Telecom Equipment
    • Notebook Computers
    • Power Management
    • Battery Chargers
    • Automotive
    • Power Supplies
    • Test Equipment

All other trademarks are the property of their respective owners

The INA220 is a current shunt and power monitor with an I2C- or SMBUS-compatible interface. The INA220 monitors both shunt drop and supply voltage. A programmable calibration value, combined with an internal multiplier, enables direct readouts in amperes. An additional multiplying register calculates power in watts. The I2C- or SMBUS-compatible interface features 16 programmable addresses. The separate shunt input on the INA220 allows it to be used in systems with low-side sensing.

The INA220 is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications.

The INA220 senses across shunts on buses that can vary from 0 to 26 V, useful for low-side sensing or CPU power supplies. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA220 operates from –40°C to 125°C.

The INA220 is a current shunt and power monitor with an I2C- or SMBUS-compatible interface. The INA220 monitors both shunt drop and supply voltage. A programmable calibration value, combined with an internal multiplier, enables direct readouts in amperes. An additional multiplying register calculates power in watts. The I2C- or SMBUS-compatible interface features 16 programmable addresses. The separate shunt input on the INA220 allows it to be used in systems with low-side sensing.

The INA220 is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications.

The INA220 senses across shunts on buses that can vary from 0 to 26 V, useful for low-side sensing or CPU power supplies. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA220 operates from –40°C to 125°C.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet INA220 High- or Low-Side, Bidirectional Current and Power Monitor With Two-Wire Interface datasheet (Rev. E) PDF | HTML 12 Jan 2016
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 18 Nov 2024
E-book An Engineer's Guide to Current Sensing (Rev. B) 12 Apr 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
Application note Getting Started with Digital Power Monitors (Rev. A) PDF | HTML 02 Sep 2021
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
Application note Understanding the I2C Bus PDF | HTML 30 Jun 2015
More literature INA220EVM (Quick-Start Guide Video) 14 Aug 2009

Design & development

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

Evaluation board

INA220EVM — INA220 evaluation module for 26-V, 12-bit, I²C output digital power monitor

The INA220 evaluation module (EVM) is a platform to evaluate the main features and performance of the INA220. The EVM supports current measurements up to 10-A and comes with graphical user interface (GUI) support to read and write to device registers.

User guide: PDF | HTML
Not available on TI.com
Code example or demo

SBOC298 — INA220EVM Rev A Source Code

Supported products & hardware

Supported products & hardware
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GUI for evaluation module (EVM)

SBOC297 — INA220EVM Rev A Software

Supported products & hardware

Supported products & hardware
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Simulation model

INA220 IBIS Model (Rev. A)

SBOM419A.ZIP (38 KB) - IBIS Model
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Calculation tool

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

Supported products & hardware

Supported products & hardware
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Calculation tool

CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool

This Excel calculator provides a comparison between two and five of our standard current sense amplifiers, delivering a chart containing the basic parameters of each device. This calculator also takes system condition inputs from users such as common-mode voltage, supply voltage, shunt resistor (...)
Supported products & hardware

Supported products & hardware
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Calculation tool

SBOR021 — Power Monitor Tool

Power Monitor Tool
Supported products & hardware

Supported products & hardware
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Schematic

INA220EVM Schematic

SBOR007.ZIP (47 KB)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
User guide: PDF
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