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Product details

Parameters

Common mode voltage (Max) (V) 28 Common mode voltage (Min) (V) 0 Input offset (+/-) (Max) (uV) 50 Input offset drift (+/-) (Typ) (uV/C) 0.1 Gain (V/V) 1 Gain error (%) 0.5 Gain error drift (+/-) (Max) (ppm/°C) 50 CMRR (Min) (dB) 100 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

VQFN (RGT) 16 9 mm² 3 x 3 open-in-new Find other Current/voltage/power monitors

Features

  • Bus Voltage Sensing From 0 V to +28 V
  • High- or Low-Side Sensing
  • Current, Voltage, and Power Reporting
  • High Accuracy:
    • 0.5% Gain Error (Max)
    • 50-µV Offset (Max)
  • Configurable Averaging Options
  • Programmable Alert Threshold
  • Power Supply Operation: 2.7 V to 5.5 V
  • Package: 3-mm x 3-mm, 16-Pin QFN
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Description

The INA230 is a current-shunt and power monitor with an I2C interface that features 16 programmable addresses. The INA230 monitors both shunt voltage drops 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 INA230 senses current on buses that vary from 0 V to +28 V, with the device powered from a single +2.7 V to +5.5 V supply, drawing 330 µA (typical) of supply current. The INA230 is specified over the operating temperature range of –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet Bidirectional Current/Power Monitor with I²C™ Interface datasheet Feb. 10, 2012
Application note Getting Started with Digital Power Monitors Mar. 12, 2021
Technical article How current-sense amplifiers monitor satellite health Feb. 08, 2021
Application note Precision, Low-Side Current Measurement (Rev. B) Mar. 06, 2019
Application note External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) Feb. 19, 2019
Technical article A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
User guide –48-V Telecom Current, Voltage, and Power Sense With Isolation Reference Design (Rev. A) Sep. 28, 2017
Application note Digital Interfaces for Current Sensing Devices Jun. 30, 2017
Technical article System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application note Integrated, Current Sensing Analog-to-Digital Converter Dec. 21, 2016
Application note Integrating The Current Sensing Signal Path (Rev. A) Dec. 02, 2016
Technical article Why should you care about overcurrent protection in your system? Jun. 16, 2016
White paper Overcurrent protection enables more efficient and reliable systems May 16, 2016
Application note Understanding the I2C Bus Jun. 30, 2015
User guide INA230EVM Evaluation Board and Software Tutorial Mar. 16, 2012

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
75
Description
The INA230EVM is a platform for evaluating the performance of the INA230 under various signal, shunt, and supply conditions.
Features
  • USB Power and I/O
  • Small Form Factor
  • Simple Software Interface
  • Software development

    GUI FOR EVALUATION MODULE (EVM) Download
    SBOC421.ZIP (102246 KB)

    Design tools & simulation

    SIMULATION MODEL Download
    SBOM750.ZIP (34 KB) - IBIS Model
    SIMULATION TOOL 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
    • (...)
    SIMULATION TOOL 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
    CALCULATION TOOL Download
    SBOR020A.ZIP (525 KB)
    CALCULATION TOOL Download
    SBOR021.ZIP (266 KB)

    Reference designs

    REFERENCE DESIGNS Download
    Smart Thermostat Localized Heat Compensation for Ambient Temperature Sensing Reference Design
    TIDA-01596 — Localized thermostat heat generation is a leading cause for incorrect ambient temperature sensing near the return air plenum. This ultimately leads to overshoot in the HVAC cycle, resulting in costly energy bills. This reference design addresses this common problem associated with thermostat design (...)
    document-generic Schematic document-generic User guide

    CAD/CAE symbols

    Package Pins Download
    VQFN (RGT) 16 View options

    Ordering & quality

    Information included:
    • RoHS
    • REACH
    • Device marking
    • Lead finish/Ball material
    • MSL rating/Peak reflow
    • MTBF/FIT estimates
    • Material content
    • Qualification summary
    • Ongoing reliability monitoring

    Support & training

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