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Current/voltage/power monitors

INA219

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

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

INA219

ACTIVE
Data sheet Order now

Product details

Common mode voltage (Max) (V) 26 Common mode voltage (Min) (V) 0 Input offset (+/-) (Max) (uV) 50, 100 Input offset drift (+/-) (Typ) (uV/C) 0.1 Gain (V/V) 1, 0.5, 0.25, 0.125 Gain error (%) 0.5, 0.3 Gain error drift (+/-) (Max) (ppm/°C) 83 CMRR (Min) (dB) 120 Bandwidth (kHz) 5.5 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 3 Iq (Max) (mA) 1 Digital interface I2C, SMBus Features Bi-directional, Programmable Gain Resolution (Bits) 12 Rating Catalog Operating temperature range (C) -40 to 125
Common mode voltage (Max) (V) 26 Common mode voltage (Min) (V) 0 Input offset (+/-) (Max) (uV) 50, 100 Input offset drift (+/-) (Typ) (uV/C) 0.1 Gain (V/V) 1, 0.5, 0.25, 0.125 Gain error (%) 0.5, 0.3 Gain error drift (+/-) (Max) (ppm/°C) 83 CMRR (Min) (dB) 120 Bandwidth (kHz) 5.5 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 3 Iq (Max) (mA) 1 Digital interface I2C, SMBus Features Bi-directional, Programmable Gain Resolution (Bits) 12 Rating Catalog Operating temperature range (C) -40 to 125
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SOIC (D) 8 19 mm² 3.91 x 4.9 SOIC (D) 8 19 mm² 4.9 x 3.9 SOT-23 (DCN) 8 8 mm² 2.9 x 2.8
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  • Senses Bus Voltages from 0 to 26 V
  • Reports Current, Voltage, and Power
  • 16 Programmable Addresses
  • High Accuracy: 0.5% (Maximum) Over
    Temperature (INA219B)
  • Filtering Options
  • Calibration Registers
  • SOT23-8 and SOIC-8 Packages
  • Senses Bus Voltages from 0 to 26 V
  • Reports Current, Voltage, and Power
  • 16 Programmable Addresses
  • High Accuracy: 0.5% (Maximum) Over
    Temperature (INA219B)
  • Filtering Options
  • Calibration Registers
  • SOT23-8 and SOIC-8 Packages
open-in-new Find other Current/voltage/power monitors

The INA219 is a current shunt and power monitor with an I2C- or SMBUS-compatible interface. The device monitors both shunt voltage drop and bus supply voltage, with programmable conversion times and filtering. A programmable calibration value, combined with an internal multiplier, enables direct readouts of current in amperes. An additional multiplying register calculates power in watts. The I2C- or SMBUS-compatible interface features 16 programmable addresses.

The INA219 is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications.

The INA219 senses across shunts on buses that can vary from 0 to 26 V. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA219 operates from –40°C to 125°C.

The INA219 is a current shunt and power monitor with an I2C- or SMBUS-compatible interface. The device monitors both shunt voltage drop and bus supply voltage, with programmable conversion times and filtering. A programmable calibration value, combined with an internal multiplier, enables direct readouts of current in amperes. An additional multiplying register calculates power in watts. The I2C- or SMBUS-compatible interface features 16 programmable addresses.

The INA219 is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications.

The INA219 senses across shunts on buses that can vary from 0 to 26 V. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA219 operates from –40°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet INA219 Zerø-Drift, Bidirectional Current/Power Monitor With I2C Interface datasheet (Rev. G) 11 Oct 2014
Application note Digital Interfaces for Current Sensing Devices (Rev. A) 30 Sep 2021
Application note Integrating the Current Sensing Signal Path (Rev. B) 29 Sep 2021
Application note Integrated, Current Sensing Analog-to-Digital Converter (Rev. A) 28 Sep 2021
Application note Getting Started with Digital Power Monitors (Rev. A) 02 Sep 2021
Technical article Solving the multidecade current-measurement challenge in your 48-V BMS application 14 Jun 2021
Technical article How current-sense amplifiers monitor satellite health 08 Feb 2021
E-book Simplifying Current Sensing (Rev. A) 09 Jan 2020
Technical article A key to accurate system thermal management: monitoring both current flow and temperature 04 Oct 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
User guide INA219 Evaluation Module User's Guide (Rev. C) 14 Sep 2017
Technical article System trade-offs for high- and low-side current measurements 01 Jun 2017
Application note Energy and Power Monitoring with Digital Current Sensors 25 May 2017
Application note Understanding the I2C Bus 30 Jun 2015

Design & development

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

Evaluation board

INA219EVM — INA210 evaluation module

The INA219EVM key hardware consists of two boards, INA219 Test Board and USB DIG Platform. The INA219 Test Board contains the INA219, terminal strips for external connections, and several jumpers for device configuration. The USB DIG Platform contains an 8052 microcontroller with a built in USB (...)

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Code example or demo

INA219EVM Source Code

SBOC270.ZIP (16441 KB)
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GUI for evaluation module (EVM)

INA219EVM Software

SBOC271.ZIP (3636 KB)
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Simulation model

INA219 IBIS Model

SBOM418.ZIP (24 KB) - IBIS Model
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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 (...)
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Calculation tool

Current Sense Amplifier Comparison and Error Tool (Rev. D)

SBOR020D.ZIP (582 KB)
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Calculation tool

Power Monitor Tool

SBOR021.ZIP (266 KB)
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Schematic

INA219EVM Schematic

SBOR006.PDF (32 KB)
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Reference designs

TIDA-00818 — Mobile Point of Sale (mPOS) Power Reference Design

The TIDA-00818 is mobile point of sale (mPOS) reference design features a 1S1P Li-Ion battery architecture to reduce system size and cost. Integrated load switches are used to reduce standby power consumption and maximize battery life to enable the single-cell architecture. A USB Type-C charging (...)
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Package Pins Download
SOIC (D) 8 View options
SOT-23 (DCN) 8 View options

Ordering & quality

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