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Current/voltage/power monitors

INA230

ACTIVE

36-V, 16-bit, I²C output current, voltage and power monitor with alert

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Data sheet

INA230

ACTIVE
Data sheet Order now

Product details

Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Input offset (±) (max) (V) 0.000025 Input offset drift (±) (typ) (V/°C) 0.00000005 Voltage gain (V/V) 1 CMRR (min) (dB) 120 Bandwidth (MHz) 0.0035 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, Integrated Power Monitor, Low-side Capable Resolution (Bps) 16 Rating Catalog Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 36 Common-mode voltage (min) (V) 0 Input offset (±) (max) (V) 0.000025 Input offset drift (±) (typ) (V/°C) 0.00000005 Voltage gain (V/V) 1 CMRR (min) (dB) 120 Bandwidth (MHz) 0.0035 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, Integrated Power Monitor, Low-side Capable Resolution (Bps) 16 Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RGT) 16 9 mm² 3 x 3 VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • Bus voltage sensing from 0 V to 36 V
  • High- or low-side sensing
  • Current, voltage, and power reporting
  • High accuracy:
    • 0.3% gain error (maximum)
    • 25-µV offset (maximum)
  • Configurable averaging options
  • Programmable alert threshold
  • Power supply operation: 2.7 V to 5.5 V
  • Packages:
    • 16-pin RGT (VQFN)
    • 10-pin DGS (VSSOP)
  • Bus voltage sensing from 0 V to 36 V
  • High- or low-side sensing
  • Current, voltage, and power reporting
  • High accuracy:
    • 0.3% gain error (maximum)
    • 25-µV offset (maximum)
  • Configurable averaging options
  • Programmable alert threshold
  • Power supply operation: 2.7 V to 5.5 V
  • Packages:
    • 16-pin RGT (VQFN)
    • 10-pin DGS (VSSOP)

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 36 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.

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 36 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 INA230 36-V, 16-Bit, I2C Output Current, Voltage and Power Monitor With Alert datasheet (Rev. A) PDF | HTML 09 Dec 2021
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 note Integrating the Current Sensing Signal Path (Rev. B) PDF | HTML 29 Sep 2021
Application note Getting Started with Digital Power Monitors (Rev. A) PDF | HTML 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
Application note Precision, Low-Side Current Measurement (Rev. B) 06 Mar 2019
Application note External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) 19 Feb 2019
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
Design guide –48-V Telecom Current, Voltage, and Power Sense With Isolation Reference Design (Rev. A) 28 Sep 2017
Technical article System trade-offs for high- and low-side current measurements 01 Jun 2017
White paper Overcurrent protection enables more efficient and reliable systems 16 May 2016
Application note Understanding the I2C Bus PDF | HTML 30 Jun 2015
EVM User's guide INA230EVM Evaluation Board and Software Tutorial 16 Mar 2012

Design & development

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

Evaluation board

INA230EVM — INA230 Evaluation Module

The INA230EVM is a platform for evaluating the performance of the INA230 under various signal, shunt, and supply conditions.
User guide: PDF
Not available on TI.com
GUI for evaluation module (EVM)

INA230EVM Sortware and Source Code

SBOC421.ZIP (102246 KB)
Download
Simulation model

INA230 IBIS Model

SBOM750.ZIP (34 KB) - IBIS Model
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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 (...)
Download
Calculation tool

Power Monitor Tool

SBOR021.ZIP (266 KB)
Download
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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Reference designs

TIDA-01596 — Smart Thermostat Localized Heat Compensation for Ambient Temperature Sensing Reference Design

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 guide: PDF
Schematic: PDF
Package Pins Download
VQFN (RGT) 16 View options
VSSOP (DGS) 10 View options

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