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INA219

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

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

INA219

ACTIVE
Data sheet Order now

Product details

Parameters

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

Package | Pins | Size

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

Features

  • 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
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Description

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

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet INA219 Zerø-Drift, Bidirectional Current/Power Monitor With I2C Interface datasheet (Rev. G) Oct. 11, 2014
White papers Simplifying Current Sensing (Rev. A) Jan. 09, 2020
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
User guides INA219 Evaluation Module User's Guide (Rev. C) Sep. 14, 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
Technical articles Circuit-protection basics Mar. 25, 2016
Application notes Understanding the I2C Bus Jun. 30, 2015

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
149
Description

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 (...)

Features
  • INA219 Hardware Designer's Kit
  • Evaluate INA219 + User's Current Shunt Design
  • Full Temperature Evaluation
  • Software Control for Designer's Kit
  • Communicate with INA219 for Evaluation
  • Calibrate INA219
View details
GUIS FOR EVALUATION MODULES (EVM) Download
SBOC271.ZIP (3636 KB)

Software development

CODE EXAMPLES & DEMOS Download
SBOC270.ZIP (16441 KB)

Design tools & simulation

SIMULATION MODELS Download
SBOM418.ZIP (24 KB) - IBIS Model
SIMULATION TOOLS 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
  • (...)
View details
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
SCHEMATICS Download
SBOR006.PDF (32 KB)

Reference designs

REFERENCE DESIGNS Download
Mobile Point of Sale (mPOS) Power Reference Design
TIDA-00818 — This 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 port is also (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
SOT-23 (DCN) 8 View options

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